diff --git a/config/emgauwa-controller.pkl b/config/emgauwa-controller.pkl
index 327c1bd..b0917f1 100644
--- a/config/emgauwa-controller.pkl
+++ b/config/emgauwa-controller.pkl
@@ -19,52 +19,52 @@ logging {
 
 relays {
   new {
-    driver = "gpio"
+    driver = "null"
     pin = 24
     inverted = true
   }
   new {
-    driver = "gpio"
+    driver = "null"
     pin = 23
     inverted = true
   }
   new {
-    driver = "gpio"
+    driver = "null"
     pin = 22
     inverted = true
   }
   new {
-    driver = "gpio"
+    driver = "null"
     pin = 27
     inverted = true
   }
   new {
-    driver = "gpio"
+    driver = "null"
     pin = 18
     inverted = true
   }
   new {
-    driver = "gpio"
+    driver = "null"
     pin = 17
     inverted = true
   }
   new {
-    driver = "gpio"
+    driver = "null"
     pin = 15
     inverted = true
   }
   new {
-    driver = "gpio"
+    driver = "null"
     pin = 14
     inverted = true
   }
   new {
-    driver = "piface"
+    driver = "null"
     pin = 1
     inverted = false
   }
   new {
-    driver = "piface"
+    driver = "null"
     pin = 0
     inverted = false
   }
diff --git a/config/lib/controller.pkl b/config/lib/controller.pkl
index 05a8efd..7533b98 100644
--- a/config/lib/controller.pkl
+++ b/config/lib/controller.pkl
@@ -9,8 +9,8 @@ permissions: common.PermissionsConfig
 logging: common.LoggingConfig
 
 class RelayConfig {
-	driver: "gpio" | "piface"
-	pin: Number
-	inverted: Boolean
+  driver: "null"|"gpio"|"piface"
+  pin: Number
+  inverted: Boolean
 }
 relays: Listing<RelayConfig>
diff --git a/emgauwa-controller/src/driver.rs b/emgauwa-controller/src/driver.rs
index ce54421..9df8d31 100644
--- a/emgauwa-controller/src/driver.rs
+++ b/emgauwa-controller/src/driver.rs
@@ -2,8 +2,9 @@ use serde::{Deserialize, Deserializer};
 
 #[derive(Debug, Clone, Copy)]
 pub enum Driver {
+	Null,
 	Gpio,
-	Piface,
+	PiFace,
 }
 
 impl<'de> Deserialize<'de> for Driver {
@@ -12,8 +13,9 @@ impl<'de> Deserialize<'de> for Driver {
 		D: Deserializer<'de>,
 	{
 		match String::deserialize(deserializer)?.as_str() {
+			"null" => Ok(Driver::Null),
 			"gpio" => Ok(Driver::Gpio),
-			"piface" => Ok(Driver::Piface),
+			"piface" => Ok(Driver::PiFace),
 			_ => Err(serde::de::Error::custom("invalid driver")),
 		}
 	}
diff --git a/emgauwa-controller/src/settings.rs b/emgauwa-controller/src/settings.rs
index 2eda813..3eead14 100644
--- a/emgauwa-controller/src/settings.rs
+++ b/emgauwa-controller/src/settings.rs
@@ -1,6 +1,5 @@
-use emgauwa_lib::drivers::{GpioDriver, PifaceDriver, RelayDriver};
 use emgauwa_lib::errors::EmgauwaError;
-use emgauwa_lib::settings;
+use emgauwa_lib::{drivers, settings};
 use rppal_pfd::PiFaceDigital;
 use serde_derive::Deserialize;
 
@@ -78,7 +77,7 @@ impl Settings {
 	pub fn relays_make_drivers(
 		&self,
 		pfd: &mut Option<PiFaceDigital>,
-	) -> Result<Vec<Box<dyn RelayDriver>>, EmgauwaError> {
+	) -> Result<Vec<Box<dyn drivers::RelayDriver>>, EmgauwaError> {
 		let mut drivers = Vec::new();
 		for relay in &self.relays {
 			drivers.push(relay.make_driver(pfd)?);
@@ -91,14 +90,15 @@ impl Relay {
 	pub fn make_driver(
 		&self,
 		pfd: &mut Option<PiFaceDigital>,
-	) -> Result<Box<dyn RelayDriver>, EmgauwaError> {
-		let driver: Box<dyn RelayDriver> = match self.driver {
-			Driver::Gpio => Box::new(GpioDriver::new(self.pin, self.inverted)?),
-			Driver::Piface => {
+	) -> Result<Box<dyn drivers::RelayDriver>, EmgauwaError> {
+		let driver: Box<dyn drivers::RelayDriver> = match self.driver {
+			Driver::Null => Box::new(drivers::NullDriver::new(self.pin)),
+			Driver::Gpio => Box::new(drivers::GpioDriver::new(self.pin, self.inverted)?),
+			Driver::PiFace => {
 				if pfd.is_none() {
-					*pfd = Some(PifaceDriver::init_piface()?);
+					*pfd = Some(drivers::PiFaceDriver::init_piface()?);
 				}
-				Box::new(PifaceDriver::new(self.pin, pfd)?)
+				Box::new(drivers::PiFaceDriver::new(self.pin, pfd)?)
 			}
 		};
 		Ok(driver)
diff --git a/emgauwa-lib/src/drivers/mod.rs b/emgauwa-lib/src/drivers/mod.rs
index 71b1cfa..abae75a 100644
--- a/emgauwa-lib/src/drivers/mod.rs
+++ b/emgauwa-lib/src/drivers/mod.rs
@@ -1,8 +1,10 @@
 mod gpio;
+mod null;
 mod piface;
 
 pub use gpio::GpioDriver;
-pub use piface::PifaceDriver;
+pub use null::NullDriver;
+pub use piface::PiFaceDriver;
 
 use crate::errors::EmgauwaError;
 
diff --git a/emgauwa-lib/src/drivers/null.rs b/emgauwa-lib/src/drivers/null.rs
new file mode 100644
index 0000000..be4e8b9
--- /dev/null
+++ b/emgauwa-lib/src/drivers/null.rs
@@ -0,0 +1,26 @@
+use crate::drivers::RelayDriver;
+use crate::errors::EmgauwaError;
+
+pub struct NullDriver {
+	pub pin: u8,
+}
+
+impl NullDriver {
+	pub fn new(pin: u8) -> Self {
+		Self { pin }
+	}
+}
+
+impl RelayDriver for NullDriver {
+	fn set(&mut self, _value: bool) -> Result<(), EmgauwaError> {
+		Ok(())
+	}
+
+	fn get_pin(&self) -> u8 {
+		self.pin
+	}
+
+	fn get_inverted(&self) -> bool {
+		false
+	}
+}
diff --git a/emgauwa-lib/src/drivers/piface.rs b/emgauwa-lib/src/drivers/piface.rs
index 74c7857..7bc20da 100644
--- a/emgauwa-lib/src/drivers/piface.rs
+++ b/emgauwa-lib/src/drivers/piface.rs
@@ -5,11 +5,11 @@ use rppal_pfd::{
 use crate::drivers::RelayDriver;
 use crate::errors::EmgauwaError;
 
-pub struct PifaceDriver {
+pub struct PiFaceDriver {
 	pub pfd_pin: OutputPin,
 }
 
-impl PifaceDriver {
+impl PiFaceDriver {
 	pub fn new(pin: u8, pfd: &Option<PiFaceDigital>) -> Result<Self, EmgauwaError> {
 		let pfd = pfd.as_ref().ok_or(EmgauwaError::Hardware(String::from(
 			"PiFaceDigital not initialized",
@@ -32,7 +32,7 @@ impl PifaceDriver {
 	}
 }
 
-impl RelayDriver for PifaceDriver {
+impl RelayDriver for PiFaceDriver {
 	fn set(&mut self, value: bool) -> Result<(), EmgauwaError> {
 		if self.get_high(value) {
 			self.pfd_pin.set_high().map_err(PiFaceDigitalError::from)?;