This is a wifi room thermostat for boiler heating control system in each single room. Build-in sensors in your  wireless room thermostat detects when the temperature falls to a chosen level and then feedback to the heating system to turn on.  Item No.: WT-08 Programmability: 7days programmable Mode: Heating and cooling mode (Default heating mode)  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

This surface-mounted thermostat has been developed to be able to switch 2-wire boiler.  which is for upgrade for your old mechanical thermostat. Item No.: HT-16 Transmitter : 2*AAA battery Programmability: 7days programmable Temperature settings: 5°C ~ 35°C, 0.5°C increments Packing : Netural White Box, OEM acceptable Cetificate:CE, ROHS, RED