Ⅰ. 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. Ⅱ. Features: Ⅲ. Manual/Automatic Mode: Free to choose manual or automatic mode. Ⅳ. Accurate Temperature: Automatic temperature acquisition with 1 accuracy. Ⅴ. Weekly Programmable: The thermostat supports different temperature settings for 6-time modes per day. Ⅵ. Child Lock: The Keypad lock function is designed to prevent children from misuse. Ⅶ. Usage: Suitable for gas boiler/heating. For home, office, shopping mall, hotel, etc. Ⅷ. LCD digital display: The gas boiler thermostat adopts an LCD digital display. Ⅸ. Parameter: Ⅹ. Model: ME83 Ⅺ. Name: Gas boiler thermostat Ⅻ. Temperature sensor: NTC thermistor ⅩⅢ. Temperature Accuracy: 1 ⅩⅣ. Temperature Setting: 5-90 ⅩⅤ. Product Size: 86*86*30mm ⅩⅥ. Display: LCD screen ⅩⅦ. Frame color: white ⅩⅧ. Backlight Color: White/Blue/Orange ⅩⅨ. Button: touch the button ⅩⅩ. Material: flame retardant PC+ABS ⅩⅪ. Additional function: weekly programming/power-off memory ⅩⅫ. Current: 3A ⅩⅩⅢ. Voltage: Two 1.5V batteries (not included in delivery) ⅩⅩⅣ. Protection level/shell material: IP20 / flame retardant PC ⅩⅩⅤ. Package Includes: ⅩⅩⅥ. Smart Thermostat *1 ⅩⅩⅦ. Manual *1