Feature:1. Powered by battery, do not need plug, easy to install.2. Mobilephone App remote control from anywhere, anytime3. Simply give a voice command to Alexa or Home to control your devices.4. Three modes optional: manual mode, program mode, temporary program mode.5. Weekly Programmable: 5+2, 6+1, 7 days a week, 6 time slots on weekdays, 2 time slots on rest days, support different temperature setting and run in schedule.6. Backlight brightness adjustable: backlight can be adjust and turn off, to avoids disturbing sleep.7. Precise temperature control, more comfortable.8. Temperature calibration: display room temperature can be calibrate from 9.9°C to -9.9°C9. Anti-frost function: if the Water Gas Boiler is not turned on for a long time, the thermostat will automatically turn on for a short time.10. Children lock function is designed to prevents children from operating by mistake.11. Group control and family share function, control the device together with your family member.Specification:This is a special thermostat for Water gas boiler. It is easy to install and precisely control the temperature, making your dailylife more convenient. (Note: Need to be used with Zigbee gateway, shipping does not include Zigbee gateway.)Features:Powered by battery, do not need plug, easy to install.Mobilephone App remote control from anywhere, anytimeSimply give a voice command to Alexa or Home to control your devices.Three modes optional: manual mode, program mode, temporary program mode.Weekly Programmable: 5+2, 6+1, 7 days a week, 6 time slots on weekdays, 2 time slots on rest days, support different temperature setting and run in schedule.Backlight brightness adjustable: backlight can be adjust and turn off, to avoids disturbing sleep.Precise temperature control, more comfortable.Temperature calibration: display room temperature can be calibrate from 9.9°C to -9.9°CAnti-frost function: if the Water Gas Boiler is not turned on for a long time, the thermostat will automatically turn on for a short time.Children lock function is designed to prevents children from operating by mistake.Group control and family share function, control the device together with your family member.Specifications:Main color: whiteMain material: plasticsTemperature precision: ±1°CSelf-consumed: <170uWBattery: 3 * AA battery (not included)Load current: 3A (negative)Item size: 86 * 86 * 28mm / 3.4 * 3.4 * 1.1inPackage size: 100 * 95 * 65mm / 3.9 * 3.7 * 2.6inPackage weight: 263g / 9.3ouncePacking List:1 * Temperature ControllerPackage List:1 * Temperature Controller