diff --git a/dist/HomematicSwitchItem.js b/dist/HomematicSwitchItem.js
index 6287f0e..df0a38b 100644
--- a/dist/HomematicSwitchItem.js
+++ b/dist/HomematicSwitchItem.js
@@ -4,6 +4,12 @@ const MqttDispatcher_1 = require("./MqttDispatcher");
 const AHomematicItem_1 = require("./AHomematicItem");
 const Export_1 = require("./Export");
 class HomematicSwitchItem extends AHomematicItem_1.AHomematicItem {
+    getStateTopic() {
+        return this.stateTopic;
+    }
+    getStateFeedbackTopic() {
+        return this.stateFeedbackTopic;
+    }
     constructor(floor, room, item, label, hmId, type = 'bulb') {
         super(floor, room, item, label, hmId);
         this.stateTopic = `${this.topicFirstPart}/state`;
diff --git a/dist/M433SwitchItem.js b/dist/M433SwitchItem.js
index 32bbe01..d6492e8 100644
--- a/dist/M433SwitchItem.js
+++ b/dist/M433SwitchItem.js
@@ -4,6 +4,12 @@ const MqttDispatcher_1 = require("./MqttDispatcher");
 const AItem_1 = require("./AItem");
 const Export_1 = require("./Export");
 class M433SwitchItem extends AItem_1.AItem {
+    getStateTopic() {
+        return this.stateTopic;
+    }
+    getStateFeedbackTopic() {
+        return this.stateFeedbackTopic;
+    }
     constructor(floor, room, item, label, onCode, offCode, type = 'bulb') {
         super(floor, room, item, label);
         this.stateTopic = `${this.topicFirstPart}/state`;
diff --git a/dist/main.js b/dist/main.js
index addf36d..aadb9d5 100644
--- a/dist/main.js
+++ b/dist/main.js
@@ -102,37 +102,37 @@ bedRoomWindowLight.start();
 allLabeledItems.push(bedRoomWindowLight);
 // ---------------------------------------------------------------------------------------------------------
 let morningLightForwarder = new Forwarder_1.Forwarder('Gnd', 'Hallway', 'MorningLight', 'state', 'MorningLight', [
-    kitchenWindowLight.stateTopic,
-    kitchenCeilingLight.stateTopic,
-    hallwayDeskLight.stateTopic,
-    hallwayStandLight.stateTopic,
-    hallwayWardrobeLight.stateTopic
+    kitchenWindowLight.getStateTopic(),
+    kitchenCeilingLight.getStateTopic(),
+    hallwayDeskLight.getStateTopic(),
+    hallwayStandLight.getStateTopic(),
+    hallwayWardrobeLight.getStateTopic()
 ]);
 morningLightForwarder.start();
 let dayLightForwarder = new Forwarder_1.Forwarder('Gnd', 'Hallway', 'DayLight', 'state', 'DayLight', [
-    kitchenWindowLight.stateTopic,
-    kitchenCeilingLight.stateTopic,
-    hallwayDeskLight.stateTopic,
-    hallwayStandLight.stateTopic,
-    hallwayWardrobeLight.stateTopic,
-    diningRoomSmallLight.stateTopic,
-    diningRoomStandLight.stateTopic,
-    diningRoomCupboardLight.stateTopic,
-    livingRoomLargeLight.stateTopic,
-    livingRoomSmallLight.stateTopic,
-    livingRoomStars.stateTopic,
-    livingRoomStandLight.stateTopic
+    kitchenWindowLight.getStateTopic(),
+    kitchenCeilingLight.getStateTopic(),
+    hallwayDeskLight.getStateTopic(),
+    hallwayStandLight.getStateTopic(),
+    hallwayWardrobeLight.getStateTopic(),
+    diningRoomSmallLight.getStateTopic(),
+    diningRoomStandLight.getStateTopic(),
+    diningRoomCupboardLight.getStateTopic(),
+    livingRoomLargeLight.getStateTopic(),
+    livingRoomSmallLight.getStateTopic(),
+    livingRoomStars.getStateTopic(),
+    livingRoomStandLight.getStateTopic()
 ]);
 dayLightForwarder.start();
 let ecoLightForwarder = new Forwarder_1.Forwarder('Gnd', 'Hallway', 'EcoLight', 'state', 'EcoLight', [
-    kitchenWindowLight.stateTopic,
-    hallwayDeskLight.stateTopic,
-    hallwayWardrobeLight.stateTopic,
-    diningRoomSmallLight.stateTopic,
-    diningRoomStandLight.stateTopic,
-    diningRoomCupboardLight.stateTopic,
-    livingRoomStars.stateTopic,
-    livingRoomStandLight.stateTopic
+    kitchenWindowLight.getStateTopic(),
+    hallwayDeskLight.getStateTopic(),
+    hallwayWardrobeLight.getStateTopic(),
+    diningRoomSmallLight.getStateTopic(),
+    diningRoomStandLight.getStateTopic(),
+    diningRoomCupboardLight.getStateTopic(),
+    livingRoomStars.getStateTopic(),
+    livingRoomStandLight.getStateTopic()
 ]);
 ecoLightForwarder.start();
 // ----------------------------------------------------------------------------------------------------------
diff --git a/src/AItem.ts b/src/AItem.ts
index cd710de..a44c2bf 100644
--- a/src/AItem.ts
+++ b/src/AItem.ts
@@ -3,6 +3,15 @@ import { mqttHandler } from './MqttDispatcher'
 import { ExportType } from './Export'
 
 
+
+export interface HasStateTopic {
+    getStateTopic() : string
+}
+
+export interface HasStateAndFeedbackTopic extends HasStateTopic {
+    getStateFeedbackTopic() : string
+}
+
 export abstract class AItem {
     protected topicFirstPart: string
     protected itemId: string
diff --git a/src/HomematicSwitchItem.ts b/src/HomematicSwitchItem.ts
index bff6eb3..edb4f2e 100644
--- a/src/HomematicSwitchItem.ts
+++ b/src/HomematicSwitchItem.ts
@@ -2,8 +2,9 @@ import * as logger from './log'
 import { mqttHandler } from './MqttDispatcher'
 import { AHomematicItem } from './AHomematicItem'
 import { SwitchExport, ExportType } from './Export'
+import { HasStateAndFeedbackTopic } from './AItem';
 
-export class HomematicSwitchItem extends AHomematicItem {
+export class HomematicSwitchItem extends AHomematicItem implements HasStateAndFeedbackTopic {
     private oldState: string|undefined
     private state: string
     private actionTopic: string
@@ -12,6 +13,14 @@ export class HomematicSwitchItem extends AHomematicItem {
     private stateTopic: string
     private type: string
 
+    getStateTopic() : string {
+        return this.stateTopic
+    }
+
+    getStateFeedbackTopic() : string {
+        return this.stateFeedbackTopic
+    }
+
     constructor(floor: string, room: string, item: string, label: string, hmId: number, type: string = 'bulb') {
         super(floor, room, item, label, hmId)
         this.stateTopic = `${this.topicFirstPart}/state`
diff --git a/src/M433SwitchItem.ts b/src/M433SwitchItem.ts
index 8062d6c..306bc0d 100644
--- a/src/M433SwitchItem.ts
+++ b/src/M433SwitchItem.ts
@@ -1,19 +1,27 @@
 import * as logger from './log'
 import { mqttHandler } from './MqttDispatcher'
-import { AItem } from './AItem'
+import { AItem, HasStateAndFeedbackTopic } from './AItem'
 import { SwitchExport, ExportType } from './Export'
 
 
-export class M433SwitchItem extends AItem {
+export class M433SwitchItem extends AItem implements HasStateAndFeedbackTopic {
     private offCode: string
     private onCode: string
     private oldState: string|undefined
     private state: string
     private actionTopic: string
     private stateFeedbackTopic: string
-    public stateTopic: string
+    private stateTopic: string
     private type: string
 
+    getStateTopic() : string {
+        return this.stateTopic
+    }
+
+    getStateFeedbackTopic() : string {
+        return this.stateFeedbackTopic
+    }
+
     constructor(floor: string, room: string, item: string, label: string, onCode: string, offCode: string, type: string = 'bulb') {
         super(floor, room, item, label)
         this.stateTopic = `${this.topicFirstPart}/state`
diff --git a/src/main.ts b/src/main.ts
index e3a81a6..c8e19c0 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -134,39 +134,39 @@ allLabeledItems.push(bedRoomWindowLight)
 
 // ---------------------------------------------------------------------------------------------------------
 let morningLightForwarder = new Forwarder('Gnd', 'Hallway', 'MorningLight', 'state', 'MorningLight', [
-  kitchenWindowLight.stateTopic,
-  kitchenCeilingLight.stateTopic,
-  hallwayDeskLight.stateTopic,
-  hallwayStandLight.stateTopic,
-  hallwayWardrobeLight.stateTopic
+  kitchenWindowLight.getStateTopic(),
+  kitchenCeilingLight.getStateTopic(),
+  hallwayDeskLight.getStateTopic(),
+  hallwayStandLight.getStateTopic(),
+  hallwayWardrobeLight.getStateTopic()
 ])
 morningLightForwarder.start()
 
 let dayLightForwarder = new Forwarder('Gnd', 'Hallway', 'DayLight', 'state', 'DayLight', [
-  kitchenWindowLight.stateTopic,
-  kitchenCeilingLight.stateTopic,
-  hallwayDeskLight.stateTopic,
-  hallwayStandLight.stateTopic,
-  hallwayWardrobeLight.stateTopic,
-  diningRoomSmallLight.stateTopic,
-  diningRoomStandLight.stateTopic,
-  diningRoomCupboardLight.stateTopic,
-  livingRoomLargeLight.stateTopic,
-  livingRoomSmallLight.stateTopic,
-  livingRoomStars.stateTopic,
-  livingRoomStandLight.stateTopic
+  kitchenWindowLight.getStateTopic(),
+  kitchenCeilingLight.getStateTopic(),
+  hallwayDeskLight.getStateTopic(),
+  hallwayStandLight.getStateTopic(),
+  hallwayWardrobeLight.getStateTopic(),
+  diningRoomSmallLight.getStateTopic(),
+  diningRoomStandLight.getStateTopic(),
+  diningRoomCupboardLight.getStateTopic(),
+  livingRoomLargeLight.getStateTopic(),
+  livingRoomSmallLight.getStateTopic(),
+  livingRoomStars.getStateTopic(),
+  livingRoomStandLight.getStateTopic()
 ])
 dayLightForwarder.start()
 
 let ecoLightForwarder = new Forwarder('Gnd', 'Hallway', 'EcoLight', 'state', 'EcoLight', [
-  kitchenWindowLight.stateTopic,
-  hallwayDeskLight.stateTopic,
-  hallwayWardrobeLight.stateTopic,
-  diningRoomSmallLight.stateTopic,
-  diningRoomStandLight.stateTopic,
-  diningRoomCupboardLight.stateTopic,
-  livingRoomStars.stateTopic,
-  livingRoomStandLight.stateTopic
+  kitchenWindowLight.getStateTopic(),
+  hallwayDeskLight.getStateTopic(),
+  hallwayWardrobeLight.getStateTopic(),
+  diningRoomSmallLight.getStateTopic(),
+  diningRoomStandLight.getStateTopic(),
+  diningRoomCupboardLight.getStateTopic(),
+  livingRoomStars.getStateTopic(),
+  livingRoomStandLight.getStateTopic()
 ])
 ecoLightForwarder.start()
 // ----------------------------------------------------------------------------------------------------------