Room Thermostat, Google Assistant, Amazon Alexa
From Amazon
Aqara Smart Radiator Thermostat E1, REQUIRES AQARA ZIGBEE 3.0 HUB, Smart Thermostatic Radiator Valve with Voice Control, Geofencing Support, Compatible with HomeKit, Alexa, Google Assistant and IFTTT
Conrad Electronic
Aqara Thermostatic radiator valve SRTS-A01 White Apple HomeKit, Alexa (separate hub required), Google Home (separate hub required), IFTTT (separate hub