kkossev
January 11, 2025, 8:58pm
26
I have replied on the same topic here :
The ZIgbee battery-powered TRV's are actuators, they listen for incoming Zigbee commands. To save the battery, their radio is turned off most of the time, but the firmware is made to turn it on periodically, typically once for a short time period every second.
Many Zigbee blinds controllers and Zigbee locks have a similar battery-saving behaviour, that's why these devices do not react to the open/close commands immediately, but after some delay.
No, the TRV instantly sends updates to the hub…
On the particular case with Sonoff TRVZB device - the polling function was implemented because of not being able to make it work with Hubitat for a very long time. Polling was the only possible way to retrieve the temperature and the heating setpoint when the TRV was operated locally.
Later, this issue was fixed:
After spending a lot of time trying to find out why Sonoff TRVZB works with any other home automation hub (SmartThings, Z2M, etc,..), but not Hubitat - the reason was narrowed down to the HE hubs not responding to the Time cluster (0x000a) ReadAttributes (0x00) command :
[image]
Sonoff TRV can not sync its internal clock with the HE hub date and time and considers the pairing process incomplete.
This is how SmartThings V3 hub responds to the same command :
[image]
The same problem is ob…
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