Hi,
thanks for your reply.
Iâm using a SONOFF TRVZB together with a SONOFF SNZB-02P in each room, using external calibration as the calibration method, as mentioned.
The recommendations and dependencies regarding the SONOFF TRVZB and external calibration were well described by the person who exposed this function in Z2M. âThe Sonoff TRVZB has a built-in fail-safe mode whereby if the device has been configured to use an external temperature sensor and the external temperature has not been received by the device for more than 2 hours, the device will revert to using the internal temperature sensorâŠâ, âA value of 3600 typically means the Zigbee device will report its state once every hour. It is advised to ensure this value remains under 7200 (2 hours) so that the device is still reporting during long periods of constant temperatureâŠâ Sonoff TRVZB External Temperature Sensor Calibration
As far as I know, most temperature sensors report at least once per hour by default. This is certainly the case with the SONOFF SNZB-02P, and the reporting interval can also be adjusted if needed. Iâve been using this setup since the very first availability of external calibration, and it has always worked perfectly.
For this reason, I donât understand why a non-optional keep-alive every 10 minutes should suddenly be necessary.
Best regards









