Plugs directly into Speedfit Master (Quote 85411) or Additional Wiring Centre (Quote 43671) providing 2 timed channels for controlling the set-back times of rooms in the property. Use with Speedfit thermostat (Quote 63114). Provides energy-saving control of underfloor heating systems. Reduces temperature overnight. No additional wiring required. Technical Help available on 01895 425333. Specifications: Plugs into master or additional wiring centre.