Horstmann Thermostats, 1A, 230 V ac

A 2 or 3-channel 7 day electronic programmer for fully pumped or gravity systems providing independent control of heating and hot water.

True 7-day programming
Large display of operational status
Both units fit a British gas standard fixing plate
One touch day copy facility
1 or 2 hour boost/extension to On period
Built-in starter programme
Holiday mode for up to 30 days
Back-up battery for 10 months continuous use