diff --git a/Core/Inc/git_rev.h b/Core/Inc/git_rev.h
index 63e6bd7..ed74d6f 100644
--- a/Core/Inc/git_rev.h
+++ b/Core/Inc/git_rev.h
@@ -7,6 +7,6 @@
 
 // Auto generated header file containing the last git revision
 
-#define GIT_HASH "56a7d25"
+#define GIT_HASH "a7d18ec"
 
 #endif //FLOATPUMP_GIT_REVISION_TEMPLATE_H
\ No newline at end of file
diff --git a/Core/Src/main.cpp b/Core/Src/main.cpp
index 317afd0..dad9c04 100644
--- a/Core/Src/main.cpp
+++ b/Core/Src/main.cpp
@@ -15,6 +15,7 @@
 #include "Config_Store.h"
 #include "Menu_Controller.h"
 #include "PressureChannel.h"
+#include "RelayChannel.h"
 
 #define SLAVE_ADDRESS_LCD 0x4e
 
@@ -92,6 +93,7 @@ int main(void) {
     uint8_t cur_perc = 0;
     uint32_t  current = 0;
     uint16_t prescaler = 0;
+    uint32_t curCooldown = 0;
 
     entry1bool.linkConfig(&l_calib);
     entry2bool.linkConfig(&h_calib);
@@ -116,6 +118,13 @@ int main(void) {
     mainmenu.addEntry(entry4);
     mainmenu.addEntry(entry5);
 
+    Menu_Entry_Type_ReadOnly<uint32_t> cdd(0);
+    cdd.linkConfig(&curCooldown);
+    Menu_Entry entry6(cdd, "Cooldown");
+
+    mainmenu.addEntry(entry6);
+
+
     Menu_Controller controller(&mainmenu, display);
 
     HAL_GPIO_WritePin(MPWR0_GPIO_Port, MPWR0_Pin, GPIO_PIN_SET);
@@ -123,7 +132,8 @@ int main(void) {
 
 
     floatpump::io::PressureChannel channel(&hadc1, MPWR0_GPIO_Port, MPWR0_Pin);
-
+    floatpump::io::RelayChannel relay(OCHAN0_GPIO_Port, OCHAN0_Pin, false);
+    relay.setCooldown(10000);
 
     static int old_pos = 0;
     while (1) {
@@ -145,15 +155,21 @@ int main(void) {
         HAL_Delay(100);
 
 
-        if(l_calib)
-            channel.calibrateLow();
+        if(l_calib) {
+            relay.switchRelay(floatpump::io::RelayChannel::state::ON);
+        }
+            //channel.calibrateLow();
 
-        if(h_calib)
-            channel.calibrateHigh();
+        if(h_calib) {
+            relay.switchRelay(floatpump::io::RelayChannel::state::OFF);
+        }
+            //channel.calibrateHigh();
 
         l_calib = false;
         h_calib = false;
 
+        curCooldown = relay.getRemainingCooldown();
+
         prescaler++;
 
         if(prescaler % 100 == 0)
@@ -162,11 +178,11 @@ int main(void) {
         current = channel.getRaw();
         cur_perc = channel.getPercent();
 
-            if(cur_perc > 50) {
-                HAL_GPIO_WritePin(OCHAN0_GPIO_Port, OCHAN0_Pin, GPIO_PIN_SET);
+            /*if(cur_perc > 50) {
+                relay.switchRelay(floatpump::io::RelayChannel::state::ON);
             } else if(cur_perc < 45) {
-                HAL_GPIO_WritePin(OCHAN0_GPIO_Port, OCHAN0_Pin, GPIO_PIN_RESET);
-            }
+                relay.switchRelay(floatpump::io::RelayChannel::state::OFF);
+            }*/
     }
 }
 
diff --git a/Middlewares/floatpump/Inc/RelayChannel.h b/Middlewares/floatpump/Inc/RelayChannel.h
new file mode 100644
index 0000000..ed3d39a
--- /dev/null
+++ b/Middlewares/floatpump/Inc/RelayChannel.h
@@ -0,0 +1,70 @@
+//
+// Created by robtor on 10.01.23.
+//
+
+#ifndef FLOATPUMP_RELAYCHANNEL_H
+#define FLOATPUMP_RELAYCHANNEL_H
+
+#include "stm32f4xx_hal.h"
+
+namespace floatpump {
+    namespace io {
+
+        class RelayChannel {
+        public:
+
+            enum state {
+                ON, OFF
+            };
+
+            RelayChannel(GPIO_TypeDef *gpio, uint16_t pin, bool inverted = false, state initial = state::OFF): m_gpio(gpio), m_gpio_pin(pin), m_inverted(inverted) {
+                if(initial == state::ON)
+                    switchRelay(state::ON);
+            };
+
+            void switchRelay(state st) {
+                uint32_t elapesd = HAL_GetTick() - m_lastTick;
+
+                if(st == state::ON && m_state == state::OFF && getRemainingCooldown() == 0) {
+                    //Check if cooldown expired and enable Relay if true
+                        HAL_GPIO_WritePin(m_gpio, m_gpio_pin, (m_inverted) ? GPIO_PIN_RESET : GPIO_PIN_SET);
+                        m_state = state::ON;
+                } else if(st == state::OFF && m_state == state::ON) {
+                    //Store last tick value when turning off
+                    //Always offer turning off!
+                    m_lastTick = HAL_GetTick();
+                    HAL_GPIO_WritePin(m_gpio, m_gpio_pin, (m_inverted) ? GPIO_PIN_SET : GPIO_PIN_RESET);
+                    m_state = state::OFF;
+                }
+            }
+
+            void setCooldown(uint16_t ms) {
+                m_cooldown = ms;
+            }
+
+            uint16_t getRemainingCooldown() {
+                uint32_t elapsed = (HAL_GetTick() - m_lastTick);
+
+                if(elapsed <= m_cooldown)
+                    return m_cooldown - (HAL_GetTick() - m_lastTick);
+                else
+                    return 0;
+            }
+
+
+        private:
+            GPIO_TypeDef *m_gpio;
+            uint16_t  m_gpio_pin;
+
+            uint16_t m_cooldown = 0;
+
+            uint32_t m_lastTick = 0;
+
+            bool m_inverted = false;
+            state m_state = state::OFF;
+        };
+
+    } // floatpump
+} // io
+
+#endif //FLOATPUMP_RELAYCHANNEL_H
diff --git a/Middlewares/floatpump/Src/RelayChannel.cpp b/Middlewares/floatpump/Src/RelayChannel.cpp
new file mode 100644
index 0000000..9d402cf
--- /dev/null
+++ b/Middlewares/floatpump/Src/RelayChannel.cpp
@@ -0,0 +1,10 @@
+//
+// Created by robtor on 10.01.23.
+//
+
+#include "RelayChannel.h"
+
+namespace floatpump {
+    namespace io {
+    } // floatpump
+} // io
\ No newline at end of file