Which SONOFF thermostats and radiator valves should I buy?
SONOFF's heating range is two Zigbee radiator valves and one Zigbee wall thermostat.
All three need a Zigbee hub or gateway and are listed for Zigbee 3.0.
The TRVZB and the TRV Gen2 (TRV-ZBT) both fit M30 x 1.5 mm valves, and the TRV Gen2 adds a rotating colour display. The Thermostat Core (TP-WGZBA) switches a hydronic actuator or signals a boiler through a dry contact, and it is not rated for direct electric underfloor heating.