diff --git a/deployment/configmap.yml b/deployment/configmap.yml
index 0f5d8a7..19b437f 100644
--- a/deployment/configmap.yml
+++ b/deployment/configmap.yml
@@ -65,7 +65,7 @@ data:
       "wolfgang": {
         "label": "wolfgang",
         "windows": [ 
-          { "topic": "homegear/instance1/plain/24/1/STATE", "label": "Garten", "converter": "max" }
+          { "topic": "homegear/instance1/plain/24/1/STATE", "label": "Garten", "converter": "aqara" }
         ],
         "output_topic": "heating/homegear/instance1/set/43/1/SET_TEMPERATURE",
         "output_converter": "max"
diff --git a/src/message_processor.py b/src/message_processor.py
index 0a259e1..f30c943 100644
--- a/src/message_processor.py
+++ b/src/message_processor.py
@@ -8,7 +8,8 @@ CONVERTERS = {
       "max": lambda x: x["output_temperature"],
     },
     "window_contact_input": {
-      "max": lambda x: 'closed' if (x.lower() in ('false', 'close', 'closed')) else 'open'
+      "max": lambda x: 'closed' if (x.lower() in ('false', 'close', 'closed')) else 'open',
+      "aqara": lambda x: 'closed' if json.loads(x)["contact"] else 'open'
     }
 }