@mbj I think I finally solved the GW problem (signing password too short!). Now I'm starting to deal with OH2. I'm seeing this in the log: 2018-04-03 00:10:59.717 [DEBUG] [rotocol.mqtt.MySensorsMqttConnection] - MQTT message received. Topic: mysensors-out/99/0/1/0/1, Message: 15.0 2018-04-03 00:10:59.747 [DEBUG] [rotocol.mqtt.MySensorsMqttConnection] - Message topic part: 99/0/1/0/1 2018-04-03 00:10:59.758 [DEBUG] [rotocol.mqtt.MySensorsMqttConnection] - Converted MQTT message to MySensors Serial format. Sending on to bridge: 99;0;1;0;1;15.0 2018-04-03 00:10:59.768 [DEBUG] [rsAbstractConnection$MySensorsReader] - Message from gateway received: 99;0;1;0;1;15.0 2018-04-03 00:10:59.777 [DEBUG] [rs.internal.gateway.MySensorsGateway] - Node 99 found in gateway 2018-04-03 00:10:59.785 [DEBUG] [rs.internal.gateway.MySensorsGateway] - Child 0 not present in node 99 I have one node sending temp & hum data (DHT11: child 0 hum, child 1 temp). OH2 wont autodiscover. Does this mean it must be added manually? I hope there's an autodiscover if I'm going to build a network....