← Thermostats & heating
Bosch
Bosch Smart Home Room Thermostat II 230V
Zigbee2MQTT / ZHALocal control
- Zigbee
Verified July 2026
A mains-powered wall thermostat (model BTH-RM230Z) that pairs straight into Zigbee2MQTT — the built-in relay is exposed as a switch, making it a tidy wired replacement for an underfloor-heating or electric-heating stat without any Bosch controller. Needs 230V at the backbox, so it's an electrician job if you don't already have a wired stat there.
Specs
- model
- BTH-RM230Z
- power
- 230V mains (wired)
- relay
- Built-in, exposed as switch in Zigbee2MQTT
Affiliate disclosure: Some links in this article are affiliate links. If you buy via one of these links, we may earn a small commission at no extra cost to you. This never affects our editorial decisions — see our affiliate policy.