Homematic IP wall thermostat with switching output - for brand switches, 150628A0 : Amazon.de: DIY & Tools
Poseidon2 3468: IP thermostat with 230V/16A-rated relay outputs —
Homematic IP Smart Home Radiator Thermostat - Standard - Intelligent heating control via app and voice control with Amazon Alexa, 140280A0 : Amazon.de: DIY & Tools