diff --git a/emgauwa-controller.toml b/emgauwa-controller.toml
index eca558f..6e27e0a 100644
--- a/emgauwa-controller.toml
+++ b/emgauwa-controller.toml
@@ -13,3 +13,48 @@ file = "stdout"
 driver = "gpio"
 pin = 5
 inverted = 1
+
+[[relays]]
+driver = "gpio"
+pin = 4
+inverted = 1
+
+[[relays]]
+driver = "gpio"
+pin = 3
+inverted = 1
+
+[[relays]]
+driver = "gpio"
+pin = 2
+inverted = 1
+
+[[relays]]
+driver = "gpio"
+pin = 1
+inverted = 1
+
+[[relays]]
+driver = "gpio"
+pin = 0
+inverted = 1
+
+[[relays]]
+driver = "gpio"
+pin = 16
+inverted = 1
+
+[[relays]]
+driver = "gpio"
+pin = 15
+inverted = 1
+
+[[relays]]
+driver = "piface"
+pin = 1
+inverted = 0
+
+[[relays]]
+driver = "piface"
+pin = 0
+inverted = 0
diff --git a/emgauwa-controller/src/driver.rs b/emgauwa-controller/src/driver.rs
index 4a7350c..ce54421 100644
--- a/emgauwa-controller/src/driver.rs
+++ b/emgauwa-controller/src/driver.rs
@@ -2,17 +2,19 @@ use serde::{Deserialize, Deserializer};
 
 #[derive(Debug, Clone, Copy)]
 pub enum Driver {
-    Gpio,
-    Piface,
+	Gpio,
+	Piface,
 }
 
 impl<'de> Deserialize<'de> for Driver {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer<'de> {
-        match String::deserialize(deserializer)?.as_str() {
-            "gpio" => Ok(Driver::Gpio),
-            "piface" => Ok(Driver::Piface),
-            _ => Err(serde::de::Error::custom("invalid driver")),
-        }
-
-    }
-}
\ No newline at end of file
+	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+	where
+		D: Deserializer<'de>,
+	{
+		match String::deserialize(deserializer)?.as_str() {
+			"gpio" => Ok(Driver::Gpio),
+			"piface" => Ok(Driver::Piface),
+			_ => Err(serde::de::Error::custom("invalid driver")),
+		}
+	}
+}
diff --git a/emgauwa-controller/src/main.rs b/emgauwa-controller/src/main.rs
index b226b50..7a6e468 100644
--- a/emgauwa-controller/src/main.rs
+++ b/emgauwa-controller/src/main.rs
@@ -1,32 +1,51 @@
 use std::str;
 
-use futures::{future, pin_mut, SinkExt, StreamExt};
+use crate::relay_loop::run_relay_loop;
+use crate::settings::Settings;
+use emgauwa_lib::db::errors::DatabaseError;
+use emgauwa_lib::db::{DbController, DbRelay};
+use emgauwa_lib::types::ControllerUid;
+use emgauwa_lib::{db, models};
 use futures::channel::mpsc;
+use futures::{future, pin_mut, SinkExt, StreamExt};
 use sqlx::pool::PoolConnection;
 use sqlx::Sqlite;
 use tokio::io::AsyncReadExt;
-use tokio_tungstenite::{connect_async, tungstenite::protocol::Message};
 use tokio_tungstenite::tungstenite::Error;
-use emgauwa_lib::db;
-use emgauwa_lib::db::Controller;
-use emgauwa_lib::db::types::ControllerUid;
-use crate::relay_loop::run_relay_loop;
-use crate::settings::Settings;
+use tokio_tungstenite::{connect_async, tungstenite::protocol::Message};
 
-mod settings;
 mod driver;
 mod relay_loop;
+mod settings;
 
-fn create_this_controller(conn: &mut PoolConnection<Sqlite>, settings: &Settings) -> Controller {
-	futures::executor::block_on(async {
-		Controller::create(
-			conn,
-			&ControllerUid::new(),
-			&settings.name,
-			i64::try_from(settings.relays.len()).expect("Too many relays"),
-			true
-		).await.expect("Failed to create controller")
-	})
+async fn create_this_controller(
+	conn: &mut PoolConnection<Sqlite>,
+	settings: &Settings,
+) -> DbController {
+	DbController::create(
+		conn,
+		&ControllerUid::default(),
+		&settings.name,
+		i64::try_from(settings.relays.len()).expect("Too many relays"),
+		true,
+	)
+	.await
+	.expect("Failed to create controller")
+}
+
+async fn create_this_relay(
+	conn: &mut PoolConnection<Sqlite>,
+	this_controller: &DbController,
+	settings_relay: &settings::Relay,
+) -> DbRelay {
+	DbRelay::create(
+		conn,
+		&settings_relay.name,
+		settings_relay.number.unwrap(),
+		this_controller,
+	)
+	.await
+	.expect("Failed to create relay")
 }
 
 #[tokio::main]
@@ -37,22 +56,60 @@ async fn main() {
 
 	let mut conn = pool.acquire().await.unwrap();
 
-	let this = Controller::get_all(&mut conn)
+	let db_controller = DbController::get_all(&mut conn)
 		.await
 		.expect("Failed to get controller from database")
 		.pop()
-		.unwrap_or_else(|| create_this_controller(&mut conn, &settings));
+		.unwrap_or_else(|| {
+			futures::executor::block_on(create_this_controller(&mut conn, &settings))
+		});
+
+	let db_relays: Vec<DbRelay> = settings
+		.relays
+		.iter()
+		.map(|relay| {
+			futures::executor::block_on(async {
+				match DbRelay::get_by_controller_and_num(
+					&mut conn,
+					&db_controller,
+					relay.number.unwrap(),
+				)
+				.await
+				{
+					Ok(relay) => relay,
+					Err(err) => match err {
+						DatabaseError::NotFound => {
+							create_this_relay(&mut conn, &db_controller, relay).await
+						}
+						_ => panic!("Failed to get relay from database"),
+					},
+				}
+			})
+		})
+		.collect();
+
+	let db_controller = db_controller
+		.update(&mut conn, &db_controller.name, db_relays.len() as i64, true)
+		.await
+		.unwrap();
+
+	let relays = db_relays
+		.into_iter()
+		.map(|relay| models::Relay::from_db_relay(relay, &mut conn))
+		.collect();
+
+	let this = models::Controller {
+		controller: db_controller,
+		relays,
+	};
 
 	let this_json = serde_json::to_string(&this).unwrap();
 
-	println!("{:?}", settings.relays);
-	println!("{:?}", this);
 	println!("{}", this_json);
 
 	let url = format!(
 		"ws://{}:{}/api/v1/ws/controllers",
-		settings.core.host,
-		settings.core.port
+		settings.core.host, settings.core.port
 	);
 
 	let (stdin_tx, stdin_rx) = mpsc::unbounded();
@@ -83,13 +140,14 @@ async fn read_stdin(tx: mpsc::UnboundedSender<Message>) {
 			Ok(n) => n,
 		};
 		buf.truncate(n);
-		tx.unbounded_send(Message::text(str::from_utf8(&buf).unwrap())).unwrap();
+		tx.unbounded_send(Message::text(str::from_utf8(&buf).unwrap()))
+			.unwrap();
 	}
 }
 
 pub async fn handle_message(message_result: Result<Message, Error>) {
 	match message_result {
 		Ok(message) => println!("{}", message.into_text().unwrap()),
-		Err(err) => println!("Error: {}", err)
+		Err(err) => println!("Error: {}", err),
 	}
-}
\ No newline at end of file
+}
diff --git a/emgauwa-controller/src/relay_loop.rs b/emgauwa-controller/src/relay_loop.rs
index 22890ff..d961879 100644
--- a/emgauwa-controller/src/relay_loop.rs
+++ b/emgauwa-controller/src/relay_loop.rs
@@ -1,9 +1,8 @@
-use chrono::Local;
 use crate::settings::Settings;
+use chrono::Local;
 
 #[allow(unused_variables)]
 pub async fn run_relay_loop(settings: Settings) {
-    let next_timestamp = Local::now().naive_local();
-    loop {
-    }
-}
\ No newline at end of file
+	let next_timestamp = Local::now().naive_local();
+	loop {}
+}
diff --git a/emgauwa-controller/src/settings.rs b/emgauwa-controller/src/settings.rs
index 111debf..ca59096 100644
--- a/emgauwa-controller/src/settings.rs
+++ b/emgauwa-controller/src/settings.rs
@@ -1,5 +1,6 @@
 use emgauwa_lib::{constants, utils};
 use serde_derive::Deserialize;
+
 use crate::driver::Driver;
 
 #[derive(Clone, Debug, Deserialize)]
@@ -23,6 +24,8 @@ pub struct Logging {
 #[allow(unused)]
 pub struct Relay {
 	pub driver: Driver,
+	pub name: String,
+	pub number: Option<i64>,
 	pub pin: u8,
 	pub inverted: bool,
 }
@@ -54,6 +57,8 @@ impl Default for Relay {
 	fn default() -> Self {
 		Relay {
 			driver: Driver::Gpio,
+			number: None,
+			name: String::from("Relay"),
 			pin: 0,
 			inverted: false,
 		}
@@ -79,5 +84,13 @@ impl Default for Logging {
 }
 
 pub fn init() -> Settings {
-	utils::load_settings("controller", "CONTROLLER")
+	let mut settings: Settings = utils::load_settings("controller", "CONTROLLER");
+
+	for (num, relay) in settings.relays.iter_mut().enumerate() {
+		if relay.number.is_none() {
+			relay.number = Some(num as i64);
+		}
+	}
+
+	settings
 }
diff --git a/emgauwa-core/src/main.rs b/emgauwa-core/src/main.rs
index 62a4681..1c17a3e 100644
--- a/emgauwa-core/src/main.rs
+++ b/emgauwa-core/src/main.rs
@@ -1,5 +1,5 @@
-use std::str::FromStr;
 use actix_cors::Cors;
+use std::str::FromStr;
 
 use actix_web::middleware::TrailingSlash;
 use actix_web::{middleware, web, App, HttpServer};
@@ -13,8 +13,8 @@ mod settings;
 async fn main() -> std::io::Result<()> {
 	let settings = settings::init();
 
-	let log_level: LevelFilter = LevelFilter::from_str(&settings.logging.level)
-		.expect("Error parsing log level.");
+	let log_level: LevelFilter =
+		LevelFilter::from_str(&settings.logging.level).expect("Error parsing log level.");
 	trace!("Log level set to {:?}", log_level);
 
 	SimpleLogger::new()
@@ -26,7 +26,6 @@ async fn main() -> std::io::Result<()> {
 
 	log::info!("Starting server on {}:{}", settings.host, settings.port);
 	HttpServer::new(move || {
-
 		let cors = Cors::default()
 			.allow_any_method()
 			.allow_any_header()
diff --git a/emgauwa-lib/src/db/controllers.rs b/emgauwa-lib/src/db/controllers.rs
index c1d683c..b930517 100644
--- a/emgauwa-lib/src/db/controllers.rs
+++ b/emgauwa-lib/src/db/controllers.rs
@@ -5,11 +5,11 @@ use sqlx::pool::PoolConnection;
 use sqlx::Sqlite;
 
 use crate::db::errors::DatabaseError;
-use crate::db::Tag;
-use crate::db::types::ControllerUid;
+use crate::db::DbTag;
+use crate::types::ControllerUid;
 
 #[derive(Debug, Serialize, Clone)]
-pub struct Controller {
+pub struct DbController {
 	pub id: i64,
 	pub uid: ControllerUid,
 	pub name: String,
@@ -17,11 +17,11 @@ pub struct Controller {
 	pub active: bool,
 }
 
-impl Controller {
+impl DbController {
 	pub async fn get_all(
 		conn: &mut PoolConnection<Sqlite>,
-	) -> Result<Vec<Controller>, DatabaseError> {
-		Ok(sqlx::query_as!(Controller, "SELECT * FROM controllers")
+	) -> Result<Vec<DbController>, DatabaseError> {
+		Ok(sqlx::query_as!(DbController, "SELECT * FROM controllers")
 			.fetch_all(conn.deref_mut())
 			.await?)
 	}
@@ -29,12 +29,8 @@ impl Controller {
 	pub async fn get(
 		conn: &mut PoolConnection<Sqlite>,
 		id: i64,
-	) -> Result<Controller, DatabaseError> {
-		sqlx::query_as!(
-			Controller,
-			"SELECT * FROM controllers WHERE id = ?",
-			id
-		)
+	) -> Result<DbController, DatabaseError> {
+		sqlx::query_as!(DbController, "SELECT * FROM controllers WHERE id = ?", id)
 			.fetch_optional(conn.deref_mut())
 			.await
 			.map(|s| s.ok_or(DatabaseError::NotFound))?
@@ -43,9 +39,9 @@ impl Controller {
 	pub async fn get_by_uid(
 		conn: &mut PoolConnection<Sqlite>,
 		filter_uid: &ControllerUid,
-	) -> Result<Controller, DatabaseError> {
+	) -> Result<DbController, DatabaseError> {
 		sqlx::query_as!(
-			Controller,
+			DbController,
 			"SELECT * FROM controllers WHERE uid = ?",
 			filter_uid
 		)
@@ -56,9 +52,9 @@ impl Controller {
 
 	pub async fn get_by_tag(
 		conn: &mut PoolConnection<Sqlite>,
-		tag: &Tag,
-	) -> Result<Vec<Controller>, DatabaseError> {
-		Ok(sqlx::query_as!(Controller, "SELECT schedule.* FROM controllers AS schedule INNER JOIN junction_tag ON junction_tag.schedule_id = schedule.id WHERE junction_tag.tag_id = ?", tag.id)
+		tag: &DbTag,
+	) -> Result<Vec<DbController>, DatabaseError> {
+		Ok(sqlx::query_as!(DbController, "SELECT schedule.* FROM controllers AS schedule INNER JOIN junction_tag ON junction_tag.schedule_id = schedule.id WHERE junction_tag.tag_id = ?", tag.id)
 			.fetch_all(conn.deref_mut())
 			.await?)
 	}
@@ -81,10 +77,10 @@ impl Controller {
 		new_uid: &ControllerUid,
 		new_name: &str,
 		new_relay_count: i64,
-		new_active: bool
-	) -> Result<Controller, DatabaseError> {
+		new_active: bool,
+	) -> Result<DbController, DatabaseError> {
 		sqlx::query_as!(
-			Controller,
+			DbController,
 			"INSERT INTO controllers (uid, name, relay_count, active) VALUES (?, ?, ?, ?) RETURNING *",
 			new_uid,
 			new_name,
@@ -101,8 +97,8 @@ impl Controller {
 		conn: &mut PoolConnection<Sqlite>,
 		new_name: &str,
 		new_relay_count: i64,
-		new_active: bool
-	) -> Result<Controller, DatabaseError> {
+		new_active: bool,
+	) -> Result<DbController, DatabaseError> {
 		sqlx::query!(
 			"UPDATE controllers SET name = ?, relay_count = ?, active = ? WHERE id = ?",
 			new_name,
diff --git a/emgauwa-lib/src/db/mod.rs b/emgauwa-lib/src/db/mod.rs
index 192822b..7e7df11 100644
--- a/emgauwa-lib/src/db/mod.rs
+++ b/emgauwa-lib/src/db/mod.rs
@@ -6,20 +6,19 @@ use std::str::FromStr;
 
 use crate::db::errors::DatabaseError;
 use crate::db::model_utils::Period;
-use crate::db::types::ScheduleUid;
+use crate::types::ScheduleUid;
 
+mod controllers;
 pub mod errors;
 mod model_utils;
+mod relays;
 mod schedules;
 mod tag;
-pub mod types;
-mod controllers;
-mod relays;
 
-pub use controllers::Controller;
-pub use relays::Relay;
-pub use schedules::{Periods, Schedule};
-pub use tag::Tag;
+pub use controllers::DbController;
+pub use relays::DbRelay;
+pub use schedules::{DbPeriods, DbSchedule};
+pub use tag::DbTag;
 
 static MIGRATOR: Migrator = sqlx::migrate!("../migrations"); // defaults to "./migrations"
 
@@ -32,16 +31,16 @@ async fn init_schedule(
 	pool: &Pool<Sqlite>,
 	uid: &ScheduleUid,
 	name: &str,
-	periods: Periods,
+	periods: DbPeriods,
 ) -> Result<(), DatabaseError> {
 	trace!("Initializing schedule {:?}", name);
-	match Schedule::get_by_uid(&mut pool.acquire().await.unwrap(), uid).await {
+	match DbSchedule::get_by_uid(&mut pool.acquire().await.unwrap(), uid).await {
 		Ok(_) => Ok(()),
 		Err(err) => match err {
 			DatabaseError::NotFound => {
 				trace!("Schedule {:?} not found, inserting", name);
 				sqlx::query_as!(
-					Schedule,
+					DbSchedule,
 					"INSERT INTO schedules (uid, name, periods) VALUES (?, ?, ?) RETURNING *",
 					uid,
 					name,
@@ -71,7 +70,7 @@ pub async fn init(db: &str) -> Pool<Sqlite> {
 
 	run_migrations(&pool).await;
 
-	init_schedule(&pool, &ScheduleUid::Off, "Off", Periods(vec![]))
+	init_schedule(&pool, &ScheduleUid::Off, "Off", DbPeriods(vec![]))
 		.await
 		.expect("Error initializing schedule Off");
 
@@ -79,7 +78,7 @@ pub async fn init(db: &str) -> Pool<Sqlite> {
 		&pool,
 		&ScheduleUid::On,
 		"On",
-		Periods(vec![Period::new_on()]),
+		DbPeriods(vec![Period::new_on()]),
 	)
 	.await
 	.expect("Error initializing schedule On");
diff --git a/emgauwa-lib/src/db/model_utils.rs b/emgauwa-lib/src/db/model_utils.rs
index c455483..73d9f10 100644
--- a/emgauwa-lib/src/db/model_utils.rs
+++ b/emgauwa-lib/src/db/model_utils.rs
@@ -1,4 +1,4 @@
-use crate::db::Periods;
+use crate::db::DbPeriods;
 use chrono::{NaiveTime, Timelike};
 use serde::{Deserialize, Serialize};
 use sqlx::database::HasArguments;
@@ -51,7 +51,7 @@ impl Period {
 	}
 }
 
-impl Type<Sqlite> for Periods {
+impl Type<Sqlite> for DbPeriods {
 	fn type_info() -> SqliteTypeInfo {
 		<&[u8] as Type<Sqlite>>::type_info()
 	}
@@ -61,22 +61,22 @@ impl Type<Sqlite> for Periods {
 	}
 }
 
-impl<'q> Encode<'q, Sqlite> for Periods {
+impl<'q> Encode<'q, Sqlite> for DbPeriods {
 	//noinspection DuplicatedCode
 	fn encode_by_ref(&self, buf: &mut <Sqlite as HasArguments<'q>>::ArgumentBuffer) -> IsNull {
 		<&Vec<u8> as Encode<Sqlite>>::encode(&Vec::from(self), buf)
 	}
 }
 
-impl<'r> Decode<'r, Sqlite> for Periods {
+impl<'r> Decode<'r, Sqlite> for DbPeriods {
 	fn decode(value: SqliteValueRef<'r>) -> Result<Self, BoxDynError> {
 		let blob = <&[u8] as Decode<Sqlite>>::decode(value)?;
-		Ok(Periods::from(Vec::from(blob)))
+		Ok(DbPeriods::from(Vec::from(blob)))
 	}
 }
 
-impl From<&Periods> for Vec<u8> {
-	fn from(periods: &Periods) -> Vec<u8> {
+impl From<&DbPeriods> for Vec<u8> {
+	fn from(periods: &DbPeriods) -> Vec<u8> {
 		periods
 			.0
 			.iter()
@@ -93,7 +93,7 @@ impl From<&Periods> for Vec<u8> {
 	}
 }
 
-impl From<Vec<u8>> for Periods {
+impl From<Vec<u8>> for DbPeriods {
 	fn from(value: Vec<u8>) -> Self {
 		let mut vec = Vec::new();
 		for i in (3..value.len()).step_by(4) {
@@ -106,6 +106,6 @@ impl From<Vec<u8>> for Periods {
 				end: NaiveTime::from_hms_opt(end_val_h, end_val_m, 0).unwrap(),
 			});
 		}
-		Periods(vec)
+		DbPeriods(vec)
 	}
 }
diff --git a/emgauwa-lib/src/db/relays.rs b/emgauwa-lib/src/db/relays.rs
index 8709b1c..70dcb1f 100644
--- a/emgauwa-lib/src/db/relays.rs
+++ b/emgauwa-lib/src/db/relays.rs
@@ -1,16 +1,15 @@
 use serde_derive::Serialize;
 use std::ops::DerefMut;
 
+use crate::db::DbController;
 use sqlx::pool::PoolConnection;
 use sqlx::Sqlite;
-use crate::db::Controller;
 
 use crate::db::errors::DatabaseError;
-use crate::db::Tag;
+use crate::db::DbTag;
 
-#[derive(Debug, Serialize, Clone)]
-#[derive(sqlx::FromRow)]
-pub struct Relay {
+#[derive(Debug, Serialize, Clone, sqlx::FromRow)]
+pub struct DbRelay {
 	#[serde(skip)]
 	pub id: i64,
 	pub name: String,
@@ -19,34 +18,41 @@ pub struct Relay {
 	pub controller_id: i64,
 }
 
-impl Relay {
-	pub async fn get_all(
-		conn: &mut PoolConnection<Sqlite>,
-	) -> Result<Vec<Relay>, DatabaseError> {
-		Ok(sqlx::query_as!(Relay, "SELECT * FROM relays")
+impl DbRelay {
+	pub async fn get_all(conn: &mut PoolConnection<Sqlite>) -> Result<Vec<DbRelay>, DatabaseError> {
+		Ok(sqlx::query_as!(DbRelay, "SELECT * FROM relays")
 			.fetch_all(conn.deref_mut())
 			.await?)
 	}
 
-	pub async fn get(
-		conn: &mut PoolConnection<Sqlite>,
-		id: i64,
-	) -> Result<Relay, DatabaseError> {
-		sqlx::query_as!(
-			Relay,
-			"SELECT * FROM relays WHERE id = ?",
-			id
-		)
+	pub async fn get(conn: &mut PoolConnection<Sqlite>, id: i64) -> Result<DbRelay, DatabaseError> {
+		sqlx::query_as!(DbRelay, "SELECT * FROM relays WHERE id = ?", id)
 			.fetch_optional(conn.deref_mut())
 			.await
 			.map(|s| s.ok_or(DatabaseError::NotFound))?
 	}
 
+	pub async fn get_by_controller_and_num(
+		conn: &mut PoolConnection<Sqlite>,
+		controller: &DbController,
+		number: i64,
+	) -> Result<DbRelay, DatabaseError> {
+		sqlx::query_as!(
+			DbRelay,
+			"SELECT * FROM relays WHERE controller_id = ? AND number = ?",
+			controller.id,
+			number
+		)
+		.fetch_optional(conn.deref_mut())
+		.await
+		.map(|s| s.ok_or(DatabaseError::NotFound))?
+	}
+
 	pub async fn get_by_tag(
 		conn: &mut PoolConnection<Sqlite>,
-		tag: &Tag,
-	) -> Result<Vec<Relay>, DatabaseError> {
-		Ok(sqlx::query_as!(Relay, "SELECT schedule.* FROM relays AS schedule INNER JOIN junction_tag ON junction_tag.schedule_id = schedule.id WHERE junction_tag.tag_id = ?", tag.id)
+		tag: &DbTag,
+	) -> Result<Vec<DbRelay>, DatabaseError> {
+		Ok(sqlx::query_as!(DbRelay, "SELECT schedule.* FROM relays AS schedule INNER JOIN junction_tag ON junction_tag.schedule_id = schedule.id WHERE junction_tag.tag_id = ?", tag.id)
 			.fetch_all(conn.deref_mut())
 			.await?)
 	}
@@ -55,10 +61,10 @@ impl Relay {
 		conn: &mut PoolConnection<Sqlite>,
 		new_name: &str,
 		new_number: i64,
-		new_controller: &Controller,
-	) -> Result<Relay, DatabaseError> {
+		new_controller: &DbController,
+	) -> Result<DbRelay, DatabaseError> {
 		sqlx::query_as!(
-			Relay,
+			DbRelay,
 			"INSERT INTO relays (name, number, controller_id) VALUES (?, ?, ?) RETURNING *",
 			new_name,
 			new_number,
@@ -69,10 +75,7 @@ impl Relay {
 		.ok_or(DatabaseError::InsertGetError)
 	}
 
-	pub async fn delete(
-		&self,
-		conn: &mut PoolConnection<Sqlite>,
-	) -> Result<(), DatabaseError> {
+	pub async fn delete(&self, conn: &mut PoolConnection<Sqlite>) -> Result<(), DatabaseError> {
 		sqlx::query!("DELETE FROM relays WHERE id = ?", self.id)
 			.execute(conn.deref_mut())
 			.await
@@ -87,8 +90,8 @@ impl Relay {
 		conn: &mut PoolConnection<Sqlite>,
 		new_name: &str,
 		new_number: i64,
-		new_controller: &Controller,
-	) -> Result<Relay, DatabaseError> {
+		new_controller: &DbController,
+	) -> Result<DbRelay, DatabaseError> {
 		sqlx::query!(
 			"UPDATE relays SET name = ?, number = ?, controller_id = ? WHERE id = ?",
 			new_name,
@@ -99,14 +102,20 @@ impl Relay {
 		.execute(conn.deref_mut())
 		.await?;
 
-		Relay::get(conn, self.id).await
+		DbRelay::get(conn, self.id).await
 	}
 
-	pub async fn get_controller(&self, conn: &mut PoolConnection<Sqlite>) -> Result<Controller, DatabaseError> {
-		Controller::get(conn, self.controller_id).await
+	pub async fn get_controller(
+		&self,
+		conn: &mut PoolConnection<Sqlite>,
+	) -> Result<DbController, DatabaseError> {
+		DbController::get(conn, self.controller_id).await
 	}
 
-	pub async fn get_tags(&self, conn: &mut PoolConnection<Sqlite>) -> Result<Vec<String>, DatabaseError> {
+	pub async fn get_tags(
+		&self,
+		conn: &mut PoolConnection<Sqlite>,
+	) -> Result<Vec<String>, DatabaseError> {
 		Ok(sqlx::query_scalar!("SELECT tag FROM tags INNER JOIN junction_tag ON junction_tag.tag_id = tags.id WHERE junction_tag.relay_id = ?", self.id)
 			.fetch_all(conn.deref_mut())
 			.await?)
@@ -122,7 +131,7 @@ impl Relay {
 			.await?;
 
 		for new_tag in new_tags {
-			let tag: Tag = Tag::get_by_tag_or_create(conn, new_tag).await?;
+			let tag: DbTag = DbTag::get_by_tag_or_create(conn, new_tag).await?;
 			tag.link_relay(conn, self).await?;
 		}
 		Ok(())
diff --git a/emgauwa-lib/src/db/schedules.rs b/emgauwa-lib/src/db/schedules.rs
index b1c8004..bf5232f 100644
--- a/emgauwa-lib/src/db/schedules.rs
+++ b/emgauwa-lib/src/db/schedules.rs
@@ -7,27 +7,27 @@ use sqlx::Sqlite;
 
 use crate::db::errors::DatabaseError;
 use crate::db::model_utils::Period;
-use crate::db::Tag;
-use crate::db::types::ScheduleUid;
+use crate::db::DbTag;
+use crate::types::ScheduleUid;
 
 #[derive(Debug, Serialize, Clone)]
-pub struct Schedule {
+pub struct DbSchedule {
 	#[serde(skip)]
 	pub id: i64,
 	#[serde(rename(serialize = "id"))]
 	pub uid: ScheduleUid,
 	pub name: String,
-	pub periods: Periods,
+	pub periods: DbPeriods,
 }
 
 #[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
-pub struct Periods(pub Vec<Period>);
+pub struct DbPeriods(pub Vec<Period>);
 
-impl Schedule {
+impl DbSchedule {
 	pub async fn get_all(
 		conn: &mut PoolConnection<Sqlite>,
-	) -> Result<Vec<Schedule>, DatabaseError> {
-		Ok(sqlx::query_as!(Schedule, "SELECT * FROM schedules")
+	) -> Result<Vec<DbSchedule>, DatabaseError> {
+		Ok(sqlx::query_as!(DbSchedule, "SELECT * FROM schedules")
 			.fetch_all(conn.deref_mut())
 			.await?)
 	}
@@ -35,12 +35,8 @@ impl Schedule {
 	pub async fn get(
 		conn: &mut PoolConnection<Sqlite>,
 		id: i64,
-	) -> Result<Schedule, DatabaseError> {
-		sqlx::query_as!(
-			Schedule,
-			"SELECT * FROM schedules WHERE id = ?",
-			id
-		)
+	) -> Result<DbSchedule, DatabaseError> {
+		sqlx::query_as!(DbSchedule, "SELECT * FROM schedules WHERE id = ?", id)
 			.fetch_optional(conn.deref_mut())
 			.await
 			.map(|s| s.ok_or(DatabaseError::NotFound))?
@@ -49,9 +45,9 @@ impl Schedule {
 	pub async fn get_by_uid(
 		conn: &mut PoolConnection<Sqlite>,
 		filter_uid: &ScheduleUid,
-	) -> Result<Schedule, DatabaseError> {
+	) -> Result<DbSchedule, DatabaseError> {
 		sqlx::query_as!(
-			Schedule,
+			DbSchedule,
 			"SELECT * FROM schedules WHERE uid = ?",
 			filter_uid
 		)
@@ -62,9 +58,9 @@ impl Schedule {
 
 	pub async fn get_by_tag(
 		conn: &mut PoolConnection<Sqlite>,
-		tag: &Tag,
-	) -> Result<Vec<Schedule>, DatabaseError> {
-		Ok(sqlx::query_as!(Schedule, "SELECT schedule.* FROM schedules AS schedule INNER JOIN junction_tag ON junction_tag.schedule_id = schedule.id WHERE junction_tag.tag_id = ?", tag.id)
+		tag: &DbTag,
+	) -> Result<Vec<DbSchedule>, DatabaseError> {
+		Ok(sqlx::query_as!(DbSchedule, "SELECT schedule.* FROM schedules AS schedule INNER JOIN junction_tag ON junction_tag.schedule_id = schedule.id WHERE junction_tag.tag_id = ?", tag.id)
 			.fetch_all(conn.deref_mut())
 			.await?)
 	}
@@ -91,11 +87,11 @@ impl Schedule {
 	pub async fn create(
 		conn: &mut PoolConnection<Sqlite>,
 		new_name: &str,
-		new_periods: &Periods,
-	) -> Result<Schedule, DatabaseError> {
+		new_periods: &DbPeriods,
+	) -> Result<DbSchedule, DatabaseError> {
 		let uid = ScheduleUid::default();
 		sqlx::query_as!(
-			Schedule,
+			DbSchedule,
 			"INSERT INTO schedules (uid, name, periods) VALUES (?, ?, ?) RETURNING *",
 			uid,
 			new_name,
@@ -110,8 +106,8 @@ impl Schedule {
 		&self,
 		conn: &mut PoolConnection<Sqlite>,
 		new_name: &str,
-		new_periods: &Periods,
-	) -> Result<Schedule, DatabaseError> {
+		new_periods: &DbPeriods,
+	) -> Result<DbSchedule, DatabaseError> {
 		// overwrite periods on protected schedules
 		let new_periods = match self.uid {
 			ScheduleUid::Off | ScheduleUid::On => self.periods.borrow(),
@@ -127,7 +123,7 @@ impl Schedule {
 		.execute(conn.deref_mut())
 		.await?;
 
-		Schedule::get(conn, self.id).await
+		DbSchedule::get(conn, self.id).await
 	}
 
 	pub async fn get_tags(
@@ -149,7 +145,7 @@ impl Schedule {
 			.await?;
 
 		for new_tag in new_tags {
-			let tag: Tag = Tag::get_by_tag_or_create(conn, new_tag).await?;
+			let tag: DbTag = DbTag::get_by_tag_or_create(conn, new_tag).await?;
 			tag.link_schedule(conn, self).await?;
 		}
 		Ok(())
diff --git a/emgauwa-lib/src/db/tag.rs b/emgauwa-lib/src/db/tag.rs
index 08b4aa3..f788f5b 100644
--- a/emgauwa-lib/src/db/tag.rs
+++ b/emgauwa-lib/src/db/tag.rs
@@ -5,28 +5,28 @@ use sqlx::pool::PoolConnection;
 use sqlx::Sqlite;
 
 use crate::db::errors::DatabaseError;
-use crate::db::{Relay, Schedule};
+use crate::db::{DbRelay, DbSchedule};
 
 #[derive(Debug, Serialize, Clone)]
-pub struct Tag {
+pub struct DbTag {
 	pub id: i64,
 	pub tag: String,
 }
 
-pub struct JunctionTag {
+pub struct DbJunctionTag {
 	pub id: i64,
 	pub tag_id: i64,
 	pub relay_id: Option<i64>,
 	pub schedule_id: Option<i64>,
 }
 
-impl Tag {
+impl DbTag {
 	pub async fn create(
 		conn: &mut PoolConnection<Sqlite>,
 		new_tag: &str,
-	) -> Result<Tag, DatabaseError> {
+	) -> Result<DbTag, DatabaseError> {
 		sqlx::query_as!(
-			Tag,
+			DbTag,
 			"INSERT INTO tags (tag) VALUES (?) RETURNING *",
 			new_tag
 		)
@@ -35,11 +35,8 @@ impl Tag {
 		.ok_or(DatabaseError::InsertGetError)
 	}
 
-	pub async fn get(
-		conn: &mut PoolConnection<Sqlite>,
-		id: i64,
-	) -> Result<Tag, DatabaseError> {
-		sqlx::query_as!(Tag, "SELECT * FROM tags WHERE id = ?", id)
+	pub async fn get(conn: &mut PoolConnection<Sqlite>, id: i64) -> Result<DbTag, DatabaseError> {
+		sqlx::query_as!(DbTag, "SELECT * FROM tags WHERE id = ?", id)
 			.fetch_optional(conn.deref_mut())
 			.await
 			.map(|t| t.ok_or(DatabaseError::NotFound))?
@@ -48,10 +45,10 @@ impl Tag {
 	pub async fn get_by_tag_or_create(
 		conn: &mut PoolConnection<Sqlite>,
 		target_tag: &str,
-	) -> Result<Tag, DatabaseError> {
-		match Tag::get_by_tag(conn, target_tag).await {
+	) -> Result<DbTag, DatabaseError> {
+		match DbTag::get_by_tag(conn, target_tag).await {
 			Ok(tag) => Ok(tag),
-			Err(DatabaseError::NotFound) => Tag::create(conn, target_tag).await,
+			Err(DatabaseError::NotFound) => DbTag::create(conn, target_tag).await,
 			Err(e) => Err(e),
 		}
 	}
@@ -59,8 +56,8 @@ impl Tag {
 	pub async fn get_by_tag(
 		conn: &mut PoolConnection<Sqlite>,
 		target_tag: &str,
-	) -> Result<Tag, DatabaseError> {
-		sqlx::query_as!(Tag, "SELECT * FROM tags WHERE tag = ?", target_tag)
+	) -> Result<DbTag, DatabaseError> {
+		sqlx::query_as!(DbTag, "SELECT * FROM tags WHERE tag = ?", target_tag)
 			.fetch_optional(conn.deref_mut())
 			.await
 			.map(|t| t.ok_or(DatabaseError::NotFound))?
@@ -69,10 +66,10 @@ impl Tag {
 	pub async fn link_relay(
 		&self,
 		conn: &mut PoolConnection<Sqlite>,
-		target_relay: &Relay,
-	) -> Result<JunctionTag, DatabaseError> {
+		target_relay: &DbRelay,
+	) -> Result<DbJunctionTag, DatabaseError> {
 		sqlx::query_as!(
-			JunctionTag,
+			DbJunctionTag,
 			"INSERT INTO junction_tag (tag_id, relay_id) VALUES (?, ?) RETURNING *",
 			self.id,
 			target_relay.id
@@ -85,10 +82,10 @@ impl Tag {
 	pub async fn link_schedule(
 		&self,
 		conn: &mut PoolConnection<Sqlite>,
-		target_schedule: &Schedule,
-	) -> Result<JunctionTag, DatabaseError> {
+		target_schedule: &DbSchedule,
+	) -> Result<DbJunctionTag, DatabaseError> {
 		sqlx::query_as!(
-			JunctionTag,
+			DbJunctionTag,
 			"INSERT INTO junction_tag (tag_id, schedule_id) VALUES (?, ?) RETURNING *",
 			self.id,
 			target_schedule.id
diff --git a/emgauwa-lib/src/db/types/controller_uid.rs b/emgauwa-lib/src/db/types/controller_uid.rs
deleted file mode 100644
index 91e4a0d..0000000
--- a/emgauwa-lib/src/db/types/controller_uid.rs
+++ /dev/null
@@ -1,68 +0,0 @@
-use serde::{Serialize, Serializer};
-use sqlx::{Decode, Encode, Sqlite, Type};
-use sqlx::database::HasArguments;
-use sqlx::encode::IsNull;
-use sqlx::error::BoxDynError;
-use sqlx::sqlite::{SqliteTypeInfo, SqliteValueRef};
-use uuid::Uuid;
-
-#[derive(Clone, Debug)]
-pub struct ControllerUid(Uuid);
-
-impl ControllerUid {
-    pub fn new() -> Self {
-        Self(Uuid::new_v4())
-    }
-}
-
-impl Serialize for ControllerUid {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-        where
-            S: Serializer,
-    {
-        String::from(self).serialize(serializer)
-    }
-}
-
-impl From<&ControllerUid> for String {
-    fn from(uid: &ControllerUid) -> String {
-        uid.0.as_hyphenated().to_string()
-    }
-}
-
-impl Type<Sqlite> for ControllerUid {
-    fn type_info() -> SqliteTypeInfo {
-        <&[u8] as Type<Sqlite>>::type_info()
-    }
-
-    fn compatible(ty: &SqliteTypeInfo) -> bool {
-        <&[u8] as Type<Sqlite>>::compatible(ty)
-    }
-}
-
-impl<'q> Encode<'q, Sqlite> for ControllerUid {
-    //noinspection DuplicatedCode
-    fn encode_by_ref(&self, buf: &mut <Sqlite as HasArguments<'q>>::ArgumentBuffer) -> IsNull {
-        let uuid_val = self.0.as_bytes().to_vec();
-        <&Vec<u8> as Encode<Sqlite>>::encode(&uuid_val, buf)
-    }
-}
-
-impl<'r> Decode<'r, Sqlite> for ControllerUid {
-    //noinspection DuplicatedCode
-    fn decode(value: SqliteValueRef<'r>) -> Result<Self, BoxDynError> {
-        Ok(Self::from(<&[u8] as Decode<Sqlite>>::decode(value)?))
-    }
-}
-
-impl From<&[u8]> for ControllerUid {
-    fn from(value: &[u8]) -> Self {
-        Self(Uuid::from_slice(&value).unwrap())
-    }
-}
-
-impl From<Vec<u8>> for ControllerUid {
-    fn from(value: Vec<u8>) -> Self {
-        Self::from(value.as_slice())
-    }
-}
diff --git a/emgauwa-lib/src/handlers/v1/mod.rs b/emgauwa-lib/src/handlers/v1/mod.rs
index a85414c..711bef9 100644
--- a/emgauwa-lib/src/handlers/v1/mod.rs
+++ b/emgauwa-lib/src/handlers/v1/mod.rs
@@ -1,3 +1,3 @@
+pub mod relays;
 pub mod schedules;
 pub mod ws;
-pub mod relays;
diff --git a/emgauwa-lib/src/handlers/v1/relays.rs b/emgauwa-lib/src/handlers/v1/relays.rs
index 1968b56..2f7e69a 100644
--- a/emgauwa-lib/src/handlers/v1/relays.rs
+++ b/emgauwa-lib/src/handlers/v1/relays.rs
@@ -1,13 +1,12 @@
-use actix_web::{delete, get, post, put, web, HttpResponse};
+use actix_web::{get, web, HttpResponse};
 use serde::{Deserialize, Serialize};
-use sqlx::pool::PoolConnection;
+
 use sqlx::{Pool, Sqlite};
 
-use crate::db::errors::DatabaseError;
-use crate::db::Relay;
-use crate::db::Tag;
+use crate::db::DbRelay;
+
 use crate::handlers::errors::ApiError;
-use crate::return_models::ReturnRelay;
+use crate::models::Relay;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct RequestRelay {
@@ -19,10 +18,12 @@ pub struct RequestRelay {
 pub async fn index(pool: web::Data<Pool<Sqlite>>) -> Result<HttpResponse, ApiError> {
 	let mut pool_conn = pool.acquire().await?;
 
-	let relays = Relay::get_all(&mut pool_conn).await?;
+	let relays = DbRelay::get_all(&mut pool_conn).await?;
 
-	let return_relays: Vec<ReturnRelay> =
-		relays.into_iter().map(|s| ReturnRelay::from_relay(s, &mut pool_conn)).collect();
+	let return_relays: Vec<Relay> = relays
+		.into_iter()
+		.map(|s| Relay::from_db_relay(s, &mut pool_conn))
+		.collect();
 
 	Ok(HttpResponse::Ok().json(return_relays))
 }
diff --git a/emgauwa-lib/src/handlers/v1/schedules.rs b/emgauwa-lib/src/handlers/v1/schedules.rs
index fe3b064..489bac6 100644
--- a/emgauwa-lib/src/handlers/v1/schedules.rs
+++ b/emgauwa-lib/src/handlers/v1/schedules.rs
@@ -4,16 +4,16 @@ use sqlx::pool::PoolConnection;
 use sqlx::{Pool, Sqlite};
 
 use crate::db::errors::DatabaseError;
-use crate::db::{Periods, Schedule};
-use crate::db::Tag;
-use crate::db::types::ScheduleUid;
+use crate::db::DbTag;
+use crate::db::{DbPeriods, DbSchedule};
 use crate::handlers::errors::ApiError;
-use crate::return_models::ReturnSchedule;
+use crate::models::Schedule;
+use crate::types::ScheduleUid;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct RequestSchedule {
 	name: String,
-	periods: Periods,
+	periods: DbPeriods,
 	tags: Vec<String>,
 }
 
@@ -21,10 +21,12 @@ pub struct RequestSchedule {
 pub async fn index(pool: web::Data<Pool<Sqlite>>) -> Result<HttpResponse, ApiError> {
 	let mut pool_conn = pool.acquire().await?;
 
-	let schedules = Schedule::get_all(&mut pool_conn).await?;
+	let schedules = DbSchedule::get_all(&mut pool_conn).await?;
 
-	let return_schedules: Vec<ReturnSchedule> =
-		schedules.into_iter().map(|s| ReturnSchedule::from_schedule(s, &mut pool_conn)).collect();
+	let return_schedules: Vec<Schedule> = schedules
+		.into_iter()
+		.map(|s| Schedule::from_schedule(s, &mut pool_conn))
+		.collect();
 
 	Ok(HttpResponse::Ok().json(return_schedules))
 }
@@ -37,12 +39,14 @@ pub async fn tagged(
 	let mut pool_conn = pool.acquire().await?;
 
 	let (tag,) = path.into_inner();
-	let tag_db = Tag::get_by_tag(&mut pool_conn, &tag).await?;
+	let tag_db = DbTag::get_by_tag(&mut pool_conn, &tag).await?;
 
-	let schedules = Schedule::get_by_tag(&mut pool_conn, &tag_db).await?;
+	let schedules = DbSchedule::get_by_tag(&mut pool_conn, &tag_db).await?;
 
-	let return_schedules: Vec<ReturnSchedule> =
-		schedules.into_iter().map(|s| ReturnSchedule::from_schedule(s, &mut pool_conn)).collect();
+	let return_schedules: Vec<Schedule> = schedules
+		.into_iter()
+		.map(|s| Schedule::from_schedule(s, &mut pool_conn))
+		.collect();
 
 	Ok(HttpResponse::Ok().json(return_schedules))
 }
@@ -57,9 +61,9 @@ pub async fn show(
 	let (schedule_uid,) = path.into_inner();
 	let uid = ScheduleUid::try_from(schedule_uid.as_str()).or(Err(ApiError::BadUid))?;
 
-	let schedule = Schedule::get_by_uid(&mut pool_conn, &uid).await?;
+	let schedule = DbSchedule::get_by_uid(&mut pool_conn, &uid).await?;
 
-	let return_schedule = ReturnSchedule::from_schedule(schedule, &mut pool_conn);
+	let return_schedule = Schedule::from_schedule(schedule, &mut pool_conn);
 	Ok(HttpResponse::Ok().json(return_schedule))
 }
 
@@ -70,22 +74,22 @@ pub async fn add(
 ) -> Result<HttpResponse, ApiError> {
 	let mut pool_conn = pool.acquire().await?;
 
-	let new_schedule = Schedule::create(&mut pool_conn, &data.name, &data.periods).await?;
+	let new_schedule = DbSchedule::create(&mut pool_conn, &data.name, &data.periods).await?;
 
 	new_schedule
 		.set_tags(&mut pool_conn, data.tags.as_slice())
 		.await?;
 
-	let return_schedule = ReturnSchedule::from_schedule(new_schedule, &mut pool_conn);
+	let return_schedule = Schedule::from_schedule(new_schedule, &mut pool_conn);
 	Ok(HttpResponse::Created().json(return_schedule))
 }
 
 async fn add_list_single(
 	conn: &mut PoolConnection<Sqlite>,
 	request_schedule: &RequestSchedule,
-) -> Result<Schedule, DatabaseError> {
+) -> Result<DbSchedule, DatabaseError> {
 	let new_schedule =
-		Schedule::create(conn, &request_schedule.name, &request_schedule.periods).await?;
+		DbSchedule::create(conn, &request_schedule.name, &request_schedule.periods).await?;
 
 	new_schedule
 		.set_tags(conn, request_schedule.tags.as_slice())
@@ -101,7 +105,7 @@ pub async fn add_list(
 ) -> Result<HttpResponse, ApiError> {
 	let mut pool_conn = pool.acquire().await?;
 
-	let result: Vec<Result<Schedule, DatabaseError>> = data
+	let result: Vec<Result<DbSchedule, DatabaseError>> = data
 		.as_slice()
 		.iter()
 		.map(|request_schedule| {
@@ -109,10 +113,12 @@ pub async fn add_list(
 		})
 		.collect();
 
-	let mut return_schedules: Vec<ReturnSchedule> = Vec::new();
+	let mut return_schedules: Vec<Schedule> = Vec::new();
 	for schedule in result {
 		match schedule {
-			Ok(schedule) => return_schedules.push(ReturnSchedule::from_schedule(schedule, &mut pool_conn)),
+			Ok(schedule) => {
+				return_schedules.push(Schedule::from_schedule(schedule, &mut pool_conn))
+			}
 			Err(e) => return Ok(HttpResponse::from(e)),
 		}
 	}
@@ -130,7 +136,7 @@ pub async fn update(
 	let (schedule_uid,) = path.into_inner();
 	let uid = ScheduleUid::try_from(schedule_uid.as_str()).or(Err(ApiError::BadUid))?;
 
-	let schedule = Schedule::get_by_uid(&mut pool_conn, &uid).await?;
+	let schedule = DbSchedule::get_by_uid(&mut pool_conn, &uid).await?;
 
 	let schedule = schedule
 		.update(&mut pool_conn, data.name.as_str(), &data.periods)
@@ -140,7 +146,7 @@ pub async fn update(
 		.set_tags(&mut pool_conn, data.tags.as_slice())
 		.await?;
 
-	let return_schedule = ReturnSchedule::from_schedule(schedule, &mut pool_conn);
+	let return_schedule = Schedule::from_schedule(schedule, &mut pool_conn);
 	Ok(HttpResponse::Ok().json(return_schedule))
 }
 
@@ -158,7 +164,7 @@ pub async fn delete(
 		ScheduleUid::Off => Err(ApiError::ProtectedSchedule),
 		ScheduleUid::On => Err(ApiError::ProtectedSchedule),
 		ScheduleUid::Any(_) => {
-			Schedule::delete_by_uid(&mut pool_conn, uid).await?;
+			DbSchedule::delete_by_uid(&mut pool_conn, uid).await?;
 			Ok(HttpResponse::Ok().json("schedule got deleted"))
 		}
 	}
diff --git a/emgauwa-lib/src/handlers/v1/ws/controllers.rs b/emgauwa-lib/src/handlers/v1/ws/controllers.rs
index 9b3f6e1..8a14de3 100644
--- a/emgauwa-lib/src/handlers/v1/ws/controllers.rs
+++ b/emgauwa-lib/src/handlers/v1/ws/controllers.rs
@@ -1,4 +1,4 @@
-use crate::db::Schedule;
+use crate::db::DbSchedule;
 use crate::handlers::errors::ApiError;
 use actix::{Actor, StreamHandler};
 use actix_web::{get, web, HttpRequest, HttpResponse};
@@ -15,10 +15,10 @@ impl Actor for ControllerWs {
 	type Context = ws::WebsocketContext<Self>;
 }
 
-async fn get_schedules(pool: &mut Pool<Sqlite>) -> Result<Vec<Schedule>, ApiError> {
+async fn get_schedules(pool: &mut Pool<Sqlite>) -> Result<Vec<DbSchedule>, ApiError> {
 	let mut pool_conn = pool.acquire().await?;
 
-	Ok(Schedule::get_all(&mut pool_conn).await?)
+	Ok(DbSchedule::get_all(&mut pool_conn).await?)
 }
 
 impl StreamHandler<Result<Message, ProtocolError>> for ControllerWs {
@@ -28,9 +28,9 @@ impl StreamHandler<Result<Message, ProtocolError>> for ControllerWs {
 		match msg {
 			Ok(Message::Ping(msg)) => ctx.pong(&msg),
 			Ok(Message::Text(text)) => {
-				println!("Got text: {}", text.to_string());
+				println!("Got text: {}", text);
 				ctx.text(schedules_json)
-			},
+			}
 			_ => {}
 		}
 	}
diff --git a/emgauwa-lib/src/lib.rs b/emgauwa-lib/src/lib.rs
index 0de9d46..acdab58 100644
--- a/emgauwa-lib/src/lib.rs
+++ b/emgauwa-lib/src/lib.rs
@@ -1,5 +1,6 @@
 pub mod constants;
 pub mod db;
 pub mod handlers;
-pub mod return_models;
+pub mod models;
+pub mod types;
 pub mod utils;
diff --git a/emgauwa-lib/src/models/mod.rs b/emgauwa-lib/src/models/mod.rs
new file mode 100644
index 0000000..bfd7a70
--- /dev/null
+++ b/emgauwa-lib/src/models/mod.rs
@@ -0,0 +1,51 @@
+use crate::db;
+use futures::executor;
+use serde_derive::Serialize;
+use sqlx::pool::PoolConnection;
+use sqlx::Sqlite;
+
+#[derive(Serialize, Debug)]
+pub struct Schedule {
+	#[serde(flatten)]
+	pub schedule: db::DbSchedule,
+	pub tags: Vec<String>,
+}
+
+#[derive(Serialize, Debug)]
+pub struct Relay {
+	#[serde(flatten)]
+	pub relay: db::DbRelay,
+	pub controller: db::DbController,
+	pub tags: Vec<String>,
+}
+
+#[derive(Serialize, Debug)]
+pub struct Controller {
+	#[serde(flatten)]
+	pub controller: db::DbController,
+	pub relays: Vec<Relay>,
+}
+
+impl Schedule {
+	pub fn from_schedule(schedule: db::DbSchedule, conn: &mut PoolConnection<Sqlite>) -> Self {
+		let schedule = schedule.clone();
+		let tags = executor::block_on(schedule.get_tags(conn)).unwrap();
+
+		Schedule { schedule, tags }
+	}
+}
+
+impl Relay {
+	pub fn from_db_relay(relay: db::DbRelay, conn: &mut PoolConnection<Sqlite>) -> Self {
+		let relay = relay.clone();
+		let controller =
+			executor::block_on(db::DbController::get(conn, relay.controller_id)).unwrap();
+		let tags = executor::block_on(relay.get_tags(conn)).unwrap();
+
+		Relay {
+			relay,
+			controller,
+			tags,
+		}
+	}
+}
diff --git a/emgauwa-lib/src/return_models.rs b/emgauwa-lib/src/return_models.rs
deleted file mode 100644
index 80caa58..0000000
--- a/emgauwa-lib/src/return_models.rs
+++ /dev/null
@@ -1,50 +0,0 @@
-use crate::db::{Controller, Relay, Schedule};
-use futures::executor;
-use serde::Serialize;
-use sqlx::pool::PoolConnection;
-use sqlx::Sqlite;
-use crate::db::types::ControllerUid;
-
-#[derive(Debug, Serialize)]
-pub struct ReturnSchedule {
-	#[serde(flatten)]
-	pub schedule: Schedule,
-	pub tags: Vec<String>,
-}
-
-impl ReturnSchedule {
-	pub fn from_schedule(schedule: Schedule, conn: &mut PoolConnection<Sqlite>) -> Self {
-		let schedule = schedule.clone();
-		let tags = executor::block_on(schedule.get_tags(conn)).unwrap();
-
-		ReturnSchedule {
-			schedule,
-			tags,
-		}
-	}
-}
-
-#[derive(Debug, Serialize)]
-pub struct ReturnRelay {
-	#[serde(flatten)]
-	pub relay: Relay,
-	pub controller: Controller,
-	pub controller_id: ControllerUid,
-	pub tags: Vec<String>,
-}
-
-impl ReturnRelay {
-	pub fn from_relay(relay: Relay, conn: &mut PoolConnection<Sqlite>) -> Self {
-		let relay = relay.clone();
-		let controller = executor::block_on(Controller::get(conn, relay.controller_id)).unwrap();
-		let controller_uid = controller.uid.clone();
-		let tags = executor::block_on(relay.get_tags(conn)).unwrap();
-
-		ReturnRelay {
-			relay,
-			controller,
-			controller_id: controller_uid,
-			tags,
-		}
-	}
-}
diff --git a/emgauwa-lib/src/types/controller_uid.rs b/emgauwa-lib/src/types/controller_uid.rs
new file mode 100644
index 0000000..d2a594c
--- /dev/null
+++ b/emgauwa-lib/src/types/controller_uid.rs
@@ -0,0 +1,68 @@
+use serde::{Serialize, Serializer};
+use sqlx::database::HasArguments;
+use sqlx::encode::IsNull;
+use sqlx::error::BoxDynError;
+use sqlx::sqlite::{SqliteTypeInfo, SqliteValueRef};
+use sqlx::{Decode, Encode, Sqlite, Type};
+use uuid::Uuid;
+
+#[derive(Clone, Debug)]
+pub struct ControllerUid(Uuid);
+
+impl Default for ControllerUid {
+	fn default() -> Self {
+		Self(Uuid::new_v4())
+	}
+}
+
+impl Serialize for ControllerUid {
+	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+	where
+		S: Serializer,
+	{
+		String::from(self).serialize(serializer)
+	}
+}
+
+impl From<&ControllerUid> for String {
+	fn from(uid: &ControllerUid) -> String {
+		uid.0.as_hyphenated().to_string()
+	}
+}
+
+impl Type<Sqlite> for ControllerUid {
+	fn type_info() -> SqliteTypeInfo {
+		<&[u8] as Type<Sqlite>>::type_info()
+	}
+
+	fn compatible(ty: &SqliteTypeInfo) -> bool {
+		<&[u8] as Type<Sqlite>>::compatible(ty)
+	}
+}
+
+impl<'q> Encode<'q, Sqlite> for ControllerUid {
+	//noinspection DuplicatedCode
+	fn encode_by_ref(&self, buf: &mut <Sqlite as HasArguments<'q>>::ArgumentBuffer) -> IsNull {
+		let uuid_val = self.0.as_bytes().to_vec();
+		<&Vec<u8> as Encode<Sqlite>>::encode(&uuid_val, buf)
+	}
+}
+
+impl<'r> Decode<'r, Sqlite> for ControllerUid {
+	//noinspection DuplicatedCode
+	fn decode(value: SqliteValueRef<'r>) -> Result<Self, BoxDynError> {
+		Ok(Self::from(<&[u8] as Decode<Sqlite>>::decode(value)?))
+	}
+}
+
+impl From<&[u8]> for ControllerUid {
+	fn from(value: &[u8]) -> Self {
+		Self(Uuid::from_slice(value).unwrap())
+	}
+}
+
+impl From<Vec<u8>> for ControllerUid {
+	fn from(value: Vec<u8>) -> Self {
+		Self::from(value.as_slice())
+	}
+}
diff --git a/emgauwa-lib/src/db/types/mod.rs b/emgauwa-lib/src/types/mod.rs
similarity index 65%
rename from emgauwa-lib/src/db/types/mod.rs
rename to emgauwa-lib/src/types/mod.rs
index 9974977..0af949c 100644
--- a/emgauwa-lib/src/db/types/mod.rs
+++ b/emgauwa-lib/src/types/mod.rs
@@ -1,5 +1,5 @@
-mod schedule_uid;
 mod controller_uid;
+mod schedule_uid;
 
+pub use controller_uid::ControllerUid;
 pub use schedule_uid::ScheduleUid;
-pub use controller_uid::ControllerUid;
\ No newline at end of file
diff --git a/emgauwa-lib/src/db/types/schedule_uid.rs b/emgauwa-lib/src/types/schedule_uid.rs
similarity index 100%
rename from emgauwa-lib/src/db/types/schedule_uid.rs
rename to emgauwa-lib/src/types/schedule_uid.rs
diff --git a/emgauwa-lib/src/utils.rs b/emgauwa-lib/src/utils.rs
index 694fe46..b74f68b 100644
--- a/emgauwa-lib/src/utils.rs
+++ b/emgauwa-lib/src/utils.rs
@@ -1,9 +1,8 @@
 pub fn load_settings<T>(config_name: &str, env_prefix: &str) -> T
 where
-	for<'de> T: serde::Deserialize<'de>
+	for<'de> T: serde::Deserialize<'de>,
 {
-	let default_file = config::File::with_name(&format!("emgauwa-{}", config_name))
-		.required(false);
+	let default_file = config::File::with_name(&format!("emgauwa-{}", config_name)).required(false);
 
 	config::Config::builder()
 		.add_source(default_file)
@@ -16,4 +15,4 @@ where
 		.expect("Error building settings")
 		.try_deserialize::<T>()
 		.expect("Error reading settings")
-}
\ No newline at end of file
+}