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 1C accuracy. Weekly Programmable: The thermostat supports different temperature settings for up to 6 time periods per day. Child Lock: Keypad lock function helps prevent children from accidental operation. Usage: Suitable for gas boiler and heating systems. Ideal for home, office, shopping mall, hotel, and other indoor environments. LCD Digital Display: The gas boiler thermostat features an LCD digital display.Parameters: Model: ME83 Name: Gas Boiler Thermostat Temperature Sensor: NTC Thermistor Temperature Accuracy: 1C Temperature Setting Range: 5C to 90C 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 / Housing Material: IP20 / Flame Retardant PCPackage Includes: Smart Thermostat *1 User Manual *1