# VThermo sensor compatibility

**URL:** <https://community.homey.app/t/vthermo-sensor-compatibility/24369>\
**Category:** Apps\
**Created:** [January 13, 2020, 3:04pm UTC](https://community.homey.app/t/vthermo-sensor-compatibility/24369 "2020-01-13T15:04:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ima](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ima/32/18816_2.png) [@Ima](https://community.homey.app/u/Ima)\
**Post date:** [January 13, 2020, 3:04pm UTC](https://community.homey.app/t/vthermo-sensor-compatibility/24369/1 "2020-01-13T15:04:24Z")

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Hi, I installed VThermo app and it seems really a wonderful & useful app for what it promises: “Add a virtual thermostat to a zone with a temperature sensor and it will turn on / off heaters in the same zone”.

I use Sonoff devices (Basic, POW, 4CH Pro, TH16 etc) and they are working good in my environment, using flows. I tried to use them with VThermo but they don’t work:  
1st configuration:

- Sonoff TH16 as themperature sensor and switch of an electric heater  
2nd configuration:
- Sonoff Basic to switch the electric heater; Sonoff TH16 as themperature sensor

I configured the switch as attached to an heater; defined the zone and applied VThermo to the zone, but VThermo doesn’t see the sensor (the current temperature is not reported) and doesn’t switch on/off the switch.I didn’t do any flows because VThermo (I think) would have all done by itself.  
Do I anything wrong, or maybe is it a problem of compatibility with the Sonoff devices?  
Is there a way to see an events log and control what’s happening?  
Many thanks in advance…

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**Author:** ![balmli](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/balmli/32/1308_2.png) [@balmli](https://community.homey.app/u/balmli)\
**Post date:** [February 16, 2020, 3:24pm UTC](https://community.homey.app/t/vthermo-sensor-compatibility/24369/2 "2020-02-16T15:24:54Z")

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Hi,

For VThermo to see a sensor it must be a sensor with measure\_temperature - capability.

In the latest version also thermostats can be used, if the “Temperature from thermostat” is checked in advanced settings, and the thermostat has a measure\_temperature - capability.

You can check the capabilities from [https://developer.athom.com/tools/devices](https://developer.athom.com/tools/devices). Search for the device and look for the measure\_temperature capability.

The VThermo starts working as soon as you set the setpoint / target temperature.