diff --git a/emgauwa-core/src/app_state.rs b/emgauwa-core/src/app_state.rs
index 2441c01..feacab9 100644
--- a/emgauwa-core/src/app_state.rs
+++ b/emgauwa-core/src/app_state.rs
@@ -3,7 +3,7 @@ use std::collections::HashMap;
 use actix::{Actor, Context, Handler, Message, Recipient};
 use emgauwa_lib::errors::EmgauwaError;
 use emgauwa_lib::models::Controller;
-use emgauwa_lib::types::{ControllerUid, ControllerWsAction};
+use emgauwa_lib::types::{ControllerUid, ControllerWsAction, RelayStates};
 use futures::executor::block_on;
 use sqlx::{Pool, Sqlite};
 
@@ -20,6 +20,13 @@ pub struct ConnectController {
 	pub controller: Controller,
 }
 
+#[derive(Message)]
+#[rtype(result = "()")]
+pub struct UpdateRelayStates {
+	pub controller_uid: ControllerUid,
+	pub relay_states: RelayStates,
+}
+
 #[derive(Message)]
 #[rtype(result = "Result<(), EmgauwaError>")]
 pub struct Action {
@@ -80,6 +87,16 @@ impl Handler<ConnectController> for AppState {
 	}
 }
 
+impl Handler<UpdateRelayStates> for AppState {
+	type Result = ();
+
+	fn handle(&mut self, msg: UpdateRelayStates, _ctx: &mut Self::Context) -> Self::Result {
+		if let Some((controller, _)) = self.connected_controllers.get_mut(&msg.controller_uid) {
+			controller.apply_relay_states(&msg.relay_states);
+		}
+	}
+}
+
 impl Handler<Action> for AppState {
 	type Result = Result<(), EmgauwaError>;
 
diff --git a/emgauwa-core/src/handlers/v1/ws/controllers/handlers.rs b/emgauwa-core/src/handlers/v1/ws/controllers/handlers.rs
index abdbbe2..335f7b1 100644
--- a/emgauwa-core/src/handlers/v1/ws/controllers/handlers.rs
+++ b/emgauwa-core/src/handlers/v1/ws/controllers/handlers.rs
@@ -1,15 +1,14 @@
-use std::hash::{Hash, Hasher};
-
 use actix::{Actor, AsyncContext};
 use emgauwa_lib::db::{DbController, DbJunctionRelaySchedule, DbRelay, DbSchedule};
 use emgauwa_lib::errors::{DatabaseError, EmgauwaError};
 use emgauwa_lib::models::{Controller, FromDbModel};
 use emgauwa_lib::types::{ControllerUid, RelayStates};
+use emgauwa_lib::utils;
 use futures::executor::block_on;
 use sqlx::pool::PoolConnection;
 use sqlx::Sqlite;
 
-use crate::app_state::ConnectController;
+use crate::app_state::{ConnectController, UpdateRelayStates};
 use crate::handlers::v1::ws::controllers::ControllerWs;
 
 impl ControllerWs {
@@ -87,15 +86,18 @@ impl ControllerWs {
 
 	pub fn handle_relay_states(
 		&mut self,
-		ctx: &mut <ControllerWs as Actor>::Context,
 		controller_uid: ControllerUid,
 		relay_states: RelayStates,
 	) -> Result<(), EmgauwaError> {
 		log::debug!(
-			"Received relay states: {:?} for {}",
-			relay_states,
+			"Received relay states: {} for {}",
+			utils::printable_relay_states(&relay_states),
 			controller_uid
 		);
+		block_on(self.app_state.send(UpdateRelayStates {
+			controller_uid,
+			relay_states,
+		}))?;
 		Ok(())
 	}
 }
diff --git a/emgauwa-core/src/handlers/v1/ws/controllers/mod.rs b/emgauwa-core/src/handlers/v1/ws/controllers/mod.rs
index 58d8ab6..fc95439 100644
--- a/emgauwa-core/src/handlers/v1/ws/controllers/mod.rs
+++ b/emgauwa-core/src/handlers/v1/ws/controllers/mod.rs
@@ -55,7 +55,7 @@ impl ControllerWs {
 		let action_res = match action {
 			ControllerWsAction::Register(controller) => self.handle_register(conn, ctx, controller),
 			ControllerWsAction::RelayStates((controller_uid, relay_states)) => {
-				self.handle_relay_states(ctx, controller_uid, relay_states)
+				self.handle_relay_states(controller_uid, relay_states)
 			}
 			_ => Ok(()),
 		};
diff --git a/emgauwa-lib/src/utils.rs b/emgauwa-lib/src/utils.rs
index 0ce1079..776259b 100644
--- a/emgauwa-lib/src/utils.rs
+++ b/emgauwa-lib/src/utils.rs
@@ -8,7 +8,7 @@ use simple_logger::SimpleLogger;
 
 use crate::errors::EmgauwaError;
 use crate::settings::Permissions;
-use crate::types::Weekday;
+use crate::types::{RelayStates, Weekday};
 
 
 pub fn init_logging(level: &str) -> Result<(), EmgauwaError> {
@@ -100,3 +100,18 @@ pub fn get_weekday() -> Weekday {
 		.number_from_monday()
 		- 1) as Weekday
 }
+
+pub fn printable_relay_states(relay_states: &RelayStates) -> String {
+	let mut relay_debug = String::new();
+	relay_states.iter().for_each(|state| {
+		relay_debug.push_str(&format!(
+			"{}",
+			match state {
+				Some(true) => "+",
+				Some(false) => "-",
+				None => "?",
+			}
+		));
+	});
+	relay_debug
+}