Problem with Stella-Z Thermostat

I have these messages in openhab.log several times for different nodes of stella-z thermostat:

2016-12-08 09:53:04.700 [WARN ] [ome.core.thing.internal.ThingManager] - Cannot delegate update ‘19.5’ for item ‘Thermostat_Wohnzimmer_Temp’ to handler for channel ‘zwave:device:92da143a:node52:sensor:temperature’, because no thing with the UID ‘zwave:device:92da143a:node52:sensor’ could be found.

But there is only the sensor_temperature channel and no thing with :sensor
Is there a problem with my item definition?

Number Thermostat_Wohnzimmer_Temp 			"Wohnzimmer Temperatur: [%.1f C]"		<temperature>	(gHeating, gHeatingEG)	{channel="zwave:device:92da143a:node52:sensor_temperature"}
Number Thermostat_Wohnzimmer_Batterie 		"Wohnzimmer Batterie: [%d %%]" 			<energy> 		(gHeating, gHeatingEG)	{channel="zwave:device:92da143a:node52:battery-level"}
Number Thermostat_Wohnzimmer_Modus 			"Wohnzimmer Heizungsmodus" 				<energy>		(gHeating, gHeatingDG)	{channel="zwave:device:92da143a:node52:thermostat_mode"}
Number Thermostat_Wohnzimmer_SetPoint 		"Wohnzimmer Solltemperatur [%.1f C]" 	<temperature> 	(gHeating, gHeatingEG)	{channel="zwave:device:92da143a:node52:thermostat_setpoint_heating"}