: The thermostat detects the room temperature. When the actual room temperature is lower than the set temperature, the thermostat controls the boiler to start working. When the actual room temperature is higher than the set temperature, the thermostat controls the boiler to stop working Features: Manual or Automatic ModeFree to choose manual or automatic mode. Accurate TemperatureAutomatic temperature acquisition with 1 accuracy. Weekly Programmable The thermostat supports different temperature settings for 6-time modes per day. Child Lock The Keypad lock function is designed to prevent children from misuse. UsageSuitable for gas boiler or heating. Perfect for home, office, shopping mall, hotel, etc. LCD digital display The gas boiler thermostat adopts an LCD digital display Specifications: Model: ME83 Name: Gas boiler thermostat Temperature sensor: NTC thermistor SensorInside Sensor Temperature Accuracy: 1 Temperature Setting: 5-90 Product Size: 86x86x30mm Display: LCD screen Frame color: white Backlight Color: White or Blue or Orange Button: touch the button Material: flame retardant PCandABS Additional function: weekly programming or power-off memory Current: 3A Voltage: Two 1.5V batteries (not included in delivery) Protection level or shell material: IP20 or flame retardant PC Package Includes 1 or 2 or 3 or 4 or 5PCS Smart Thermostat 1 or 2 or 3 or 4 or 5PCS Manual