Eurotronic COMET Zigbee Thermostat

Upgrade your radiator to a connected climate control system with the Eurotronic COMET Zigbee Thermostat. This smart radiator valve head replaces mechanical thermostats and allows precision temperature control, automatic schedules, window detection, and full integration into your Zigbee home automation. It’s ideal for people who want both comfort and energy efficiency without complicated wiring.

Key Features

• Zigbee 3.0 Connectivity (Home Automation Profile)
  Communicates wirelessly with your Zigbee gateway or hub (e.g. SmartThings, Home Assistant, etc.), enabling remote control and reporting.

• Programmable Schedules
  Set daily or weekly heating and “economy” times to match your routine and reduce energy usage.

• Window Open Detection
  If a rapid drop in temperature is detected, the valve temporarily shuts off heating for ~10 minutes to save energy.

• Frost Protection & Boost Mode
  Ensures your system won’t freeze when idle and lets you trigger full heat when needed.

• Manual Override & Key Lock
  You can adjust temperature manually via buttons on the device, and lock them so children can’t tamper.

• LED Display / Feedback
  Displays target temperature or valve position with clear visual feedback.

• Valve Compatibility & Adapters
  Fits standard M30 x 1.5 mm valves (RA, RAV, RAVL types) and includes plastic adapters for common radiator types.

• Long Battery Life
  Powered by 2 × AA batteries, with around 2 years of typical use before replacement.

Technical Specifications