WirelessCommunication[WiFi (2.4GHz / 5GHz)]EnergySavingFeatures[Optimum Start]BoilerCompatibility[OpenTherm]ERP (Energy Efficiency)NBatteries IncludedYesWidth130 mmTypeProgrammable Room Thermostat (PRT)Timer Cycle5/2 DayTemperature Range5 °C to 35 °CScreen TypeLCDPower Type[AA Battery]Number of Zones1 (Heating)Height95 mmDimensions(W) 130 mm x (H) 95 mm x (D) 23 mmDepth23mmSupplier Part NumberCP4DBrand NameEPH Controls