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 Mode: Freely choose between manual or automatic mode. Accurate Temperature: Automatic temperature acquisition with 1°C accuracy. Weekly Programmable: The thermostat supports different temperature settings for up to 6 time periods per day. Child Lock: Keypad lock function helps prevent accidental changes by children. Usage: Suitable for gas boiler and heating systems. Ideal for home, office, shopping mall, hotel, and other indoor environments. LCD Digital Display: Features an LCD digital display for clear readings. Parameters: Model: ME83 Name: Gas Boiler Thermostat Temperature Sensor: NTC Thermistor Temperature Accuracy: ±1°C Temperature Setting Range: 5°C to 90°C Product Size: 86 x 86 x 30 mm Display: LCD Screen Frame Color: White Backlight Color: White/Blue/Orange Button: Touch Button Material: Flame Retardant PC+ABS Additional Functions: Weekly Programming, Power-Off Memory Current Rating: 3A Power Supply: Two 1.5V AAA batteries (not included) Protection Level / Shell Material: IP20 / Flame Retardant PC Package Includes: Smart Thermostat x 1 User Manual x 1