Energy saving time proportional and integral (TPI) control - Boiler Plus Wireless signal strength indicator operating at 868 MHz with a communication range of 30 metres in typical residential buildings Operating temperature range from 0 to 40 Celsius IP30 Rated ST9120C requires a 230V AC power supply and DT92E requires 2 x AA size, 1.5V alkaline batteries (supplied) Wireless enable upgrade Pre bound from factory 2 way wireless connection 5 Year Warranty Manufacturer Stock Code:Y9120H2009 EAN Code:5025121384216 Length:222 mm Width:148 mm Height:158 mm Weight:0.79 kg Sub-Category:Timer Brand:Honeywell Home Manufacturer Part Number:Y9120H2009 Warranty:1 Years EAN Number:5025121385510 Category:Heating Controls Type:Wireless