This wireless heating and cooling thermostat is for gas boiler or pump control. Thermostats detect temperature changes for the purpose of maintaining the temperature of an enclosed area essentially constant.  Item No.: WT-15  Programmability: 7 days 4 periods programmable (6 period also avaivable) Mode: Manual Mode, Away Mode, PRG Mode  Heat Mode or Cold Mode  Open window detection  Child Lock  868Mhz work with receiver  Color:  white  Backlight: White Material:  ABS+PC Packing : Netural White Box, OEM acceptable Other function: Child lock, Open window detection, Frost protection, Temp. calibration  Optional: Opentherm protocol Cetificate: CE, ROHS, UKCA, REACH