: 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/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/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: 86*86*30mm Display: LCD screen Frame color: white Backlight Color: White/Blue/Orange Button: touch the button Material: flame retardant PC+ABS Additional function: weekly programming/power-off memory Current: 3A Voltage: Two 1.5V batteries (not included in delivery) Protection level/shell material: IP20 / flame retardant PC Package Includes 1/2/3/4/5PCS Smart Thermostat 1/2/3/4/5PCS Manual