diff --git a/utils/equipment.js b/utils/equipment.js
index 6954a73..a1bc3d4 100644
--- a/utils/equipment.js
+++ b/utils/equipment.js
@@ -25,13 +25,23 @@ class Equipment {
 
         // Initialization of properties
         this.name = this.equipmentItem.name;
-        this.stateItem = items[this.getPropertyItemName('State')];
+
         this.watch = new Object();
+        this.timers = new Object();
+        this.timeout = new Object();
+
+        // Check if equipment has state item
+        if (this.hasProperty('State')) {
+            this.stateItem = items[this.getPropertyItemName('State')];
+            this.watch['State'] = new watch.Watch(this.stateItem);
+        } else {
+            console.info(`Item ${this.equipmentItem.name} has no state item`)
+        }
 
         // Check if equipment has LowBat item
         if (this.hasProperty('LowBat')) {
-            this.watch['lowBat'] = new watch.Watch(this.getPropertyItemName('LowBat'));
-            this.watch['lowBat'].add({
+            this.watch['LowBat'] = new watch.Watch(this.getPropertyItemName('LowBat'));
+            this.watch['LowBat'].add({
                 targetState: 'ON', 
                 alertFunc: () => { this.#notifyLowBat(); },
                 alertRepeat: 'PT23H'
@@ -68,7 +78,7 @@ class Equipment {
             }
         }       
 
-        console.debug(`Return value ${valueName} for ${this.name}: ${returnValue}`);
+        console.debug(`Return value for property ${propertyName} for ${this.name}: ${returnValue}`);
         return returnValue;
     }
 
@@ -107,6 +117,113 @@ class Equipment {
 class Irrigation extends Equipment {
     constructor(equipmentItem) {
         super(equipmentItem);
+
+        // Initialization of properties
+        this.valves = new Object();
+
+        // Add on/off watch rule
+        this.watch['State'].add({
+            targetState: 'ON', 
+            alertFunc: () => { this.#irrigationOn(); },
+            endAlertFunc: () => { this.#irrigationOff(); },
+        });
+
+        // Fetch irrigation valves and initialize as subequipment
+        for (let valve of this.equipmentItem.members.filter(item => { return item.tags.includes('IrrigationValve'); } )) {
+            try {
+                this.valves[valve.name] = new IrrigationValve(valve);
+            } catch (error) {
+                console.error(error);
+            }
+        }
+
+    }
+
+    gc() {
+        console.info('Deinitialization of irrigation valves for ' + this.name);
+
+        // Delete all watchObjects
+        for (let valve of Object.keys(this.valves)) {
+            this.valves[valve].gc();
+        }
+
+        // Call function to deinitialize irrigation
+        super.gc();
+    }
+
+    #irrigationOn() {
+        console.info(`Irrigation ${this.name} received command on`);
+
+        // Fetch valves with AutoMode enabled
+        let autoValves = Object.keys(this.valves).filter(element => { return this.valves[element].getValue('AutoMode', 'OFF') == 'ON'} );
+        
+        // Skip if no valves with AutoMode enabled are available
+        if (autoValves.length == 0) {
+            console.info('No valves with AutoMode enabled available');
+            this.stateItem.sendCommandIfDifferent('OFF');
+            return;
+        }
+
+        let totalDuration = 0;
+
+        for (let i = 0; i < autoValves.length; i++) {
+            let currentValve = autoValves[i];
+            let nextValve = autoValves[(i + 1)];
+            let duration = time.toZDT(this.valves[currentValve].getValue('Duration', 'PT30S')).getMillisFromNow();
+
+            // calculate start and endtimes for valve
+            let startTime = time.toZDT(totalDuration)
+            totalDuration = totalDuration + duration;
+            let endTime = time.toZDT(totalDuration);
+
+            // Set timers for valve
+            this.valves[currentValve].timers['autoOn'] = actions.ScriptExecution.createTimer(
+                                                                                            startTime,
+                                                                                            () => {
+                                                                                                this.valves[currentValve].stateItem.sendCommandIfDifferent('ON');
+                                                                                            }
+                                                                                            );
+
+            this.valves[currentValve].timers['autoOff'] = actions.ScriptExecution.createTimer(
+                                                                                            endTime,
+                                                                                            () => {
+                                                                                                this.valves[currentValve].stateItem.sendCommandIfDifferent('OFF');
+                                                                                            }
+                                                                                            );
+
+            // Stop irrigation after the last valve
+            if (nextValve == undefined) {
+                console.log('No further valves with autoMode enabled available');
+                this.timers['autoOff'] = actions.ScriptExecution.createTimer(
+                    endTime.plusSeconds(5),
+                    () => {
+                        console.debug(`Switch irrigation ${this.name} to off`)
+                        this.stateItem.sendCommandIfDifferent('OFF');
+                    }
+                    );
+            }
+        }
+    }
+
+    #irrigationOff() {
+        console.info(`Irrigation ${this.name} received command off`);
+
+        if (this.timers.hasOwnProperty('autoOff') && this.timers['autoOff'].isActive()) {
+            console.debug(`Cancel stop timer for irrigation`);
+            this.timers['autoOff'].cancel();
+        }
+
+        for (let valve of Object.keys(this.valves)) {
+            if (this.valves[valve].timers.hasOwnProperty('autoOn') && this.valves[valve].timers['autoOn'].isActive()) {
+                console.debug(`Cancel start timer for valve ${valve}`);
+                this.valves[valve].timers['autoOn'].cancel();
+            }
+            if (this.valves[valve].timers.hasOwnProperty('autoOff') && this.valves[valve].timers['autoOff'].isActive()) {
+                console.debug(`Cancel stop timer for valve ${valve}`);
+                this.valves[valve].timers['autoOff'].cancel();
+            }
+            this.valves[valve].stateItem.sendCommandIfDifferent('OFF')
+        }
     }
 }
 
@@ -114,11 +231,10 @@ class IrrigationValve extends Equipment {
     constructor(equipmentItem) {
         super(equipmentItem);
 
-        this.watch['state'] = new watch.Watch(this.stateItem.name);
-        this.watch['state'].add({
+        this.watch['State'].add({
             targetState: 'ON', 
             alertFunc: () => { this.stateItem.sendCommand('OFF'); },
-            alertDelay: 'PT59M'
+            alertDelay: 'PT30M'
         });
     }
 }
@@ -127,8 +243,7 @@ class TowelRadiator extends Equipment {
     constructor(equipmentItem) {
         super(equipmentItem);
 
-        this.watch['state'] = new watch.Watch(this.stateItem.name);
-        this.autoOff = this.watch['state'].add({
+        this.watch['State'].add({
             targetState: 'ON', 
             alertFunc: () => { this.stateItem.sendCommand('OFF'); },
             alertDelay: 'PT59M'