Honeywell Home Evohome HR91 Radiator Controller features:

• LED lights, evohome pop-ups and mobile notifications allow the user to easily identify status of the unit.
• Child lock mode disables any local interaction.
• Simple lock mechanism allows for quick installation.
• Fits most common radiator valves (type M30 x 1.5). Adaptors available for other types.
• ‘Window Open’ function means radiator will automatically shut down when ventilating the room.
• Buttons for simple binding.
• Manual basic override ensure user can still maintain comfort even in the event of signal loss.