This is a Heat Cool thermostat for underfloor heating and fan coil control system. Heat pump system is a trend of room heating system in European. Integrated with smart heat cool thermostats, users can do app remote control. Item No.: WT-25 Programmability: 7days programmable Mode: Manual Mode, Away Mode, PRG Mode  Color:  Black or 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, WiFi optional, Zigbee optional Cetificate: CE, ROHS, UKCA, REACH, RED