Eurotronic Comet Zero Bluetooth Electronic Radiator Thermostat, Smart Thermostat, 8-28°C, White (700254)

Managing room temperature manually is often inefficient and inconvenient. The Eurotronic Comet Zero Bluetooth radiator thermostat solves this by giving you precise, programmable control over your heating from your smartphone or directly at the valve.

Who is it for

This thermostat is ideal for homeowners and renters who want to reduce heating costs and increase comfort without complex installation. It fits standard M30 x 1.5 mm radiator valves and includes adapters for Danfoss RA, RAV, and RAVL valves, making it compatible with most common radiators.

Main features

• Bluetooth 5.0 LE connectivity for app control via iOS or Android
• Adjustable temperature range from 8 °C to 28 °C
• Manual rotary knob for direct adjustment without the app
• LCD display shows current temperature and settings
• Weekly programming for automated heating schedules
• Window open detection automatically reduces heating to save energy
• Frost protection, child lock, and boost function for convenience and safety
• Long battery life up to 5 years with 2 AA batteries

Specifications

• Connectivity: Bluetooth 5.0 LE
• Temperature range: 8 °C to 28 °C (adjustable), display range 0 °C to 50 °C
• Power supply: 2x AA Mignon LR6 batteries (3 V)
• Battery life: up to 5 years
• Display: LCD
• Mounting thread: M30 x 1.5 mm
• Valve compatibility: M30 x 1.5 mm, Danfoss RA/RAV/RAVL (adapters included)
• Control: manual rotary knob, smartphone app (iOS/Android)
• Special functions: window open detection, frost protection, child lock, boost, weekly programming, summer/winter time change, valve protection
• Material: plastic, colour: white

Tips

For best results, calibrate the thermostat with your valve during installation and ensure the batteries are fresh. Use the app to create a weekly schedule that matches your routine, and enable window open detection to avoid heating while ventilating.