An energy efficient accessory for your boiler, this Viessmann Outside Temperature Sensor enables Weather Compensation when paired with a time and temperature control (sold separately). This sensor connects to the boiler from the outside of a building, working to increase or decrease the radiator temperature in accordance with outdoor weather changes. This sensor can be retrofit to existing selected installed boilers from Glow-Worm (please check compatibility before purchasing).
Availability: Next Day
Product Type: Weather Compensator Sensor
Manufacturer Name: Viessmann Ltd