This smart thermostat has been developed to be able to control your heating and hot water from anywhere via your smart phone.  Item No.: WT-20 Programmability: 7days programmable Mode: Heating and cooling mode (Default heating mode)  Backlight: Black 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

CH7100 are High Resolution Color Touch Screen Digital Room Thermostats are multi-functional devices that offer a simple-to-use color touch screen user interface. This stand-alone digital room thermostat is designed to program and configure temperature control of a wide range of heating and cooling equipment in both residential and commercial applications. Item No.: CH7100 A c-wire is required for all systems Works with two stages of heating and two stages of cooling (2H/2C) Works with Heat Only and Cool Only system  Works with Heat Pump (With or Without Aux) Works with Amazon Alexa, Google Assistant Remotely control your home comfort from your smartphone Using the free mobile app for Android and iOS devices. 4.3 inch TFT Capacitive Touchscreen Display

This Smart thermostat for Electric heating has a elegant,sleeker design with a large square LCD screen ensuring an excellent user experience of temperature control.      Environmental ABS material      Attractive and Big LCD Display      Multiple modes control(Manual,Economy and PRG. Mode)      Water heating system(3A)      7 days Programmable (4periods/day)      Clock display      86*86*17mm dimension      Frost protection      CE, ROHS approved      2.4G WIFI      External sensor supported