A. 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. B. Features: C. Manual/Automatic Mode: Free to choose manual or automatic mode. D. Accurate Temperature: Automatic temperature acquisition with 1 accuracy. E. Weekly Programmable: The thermostat supports different temperature settings for 6-time modes per day. F. Child Lock: The Keypad lock function is designed to prevent children from misuse. G. Usage: Suitable for gas boiler/heating. Suitable for home, office, shopping mall, hotel, etc. H. LCD digital display: The gas boiler thermostat adopts an LCD digital display. I. Parameter: J. Model: ME83 K. Name: Gas boiler thermostat L. Temperature sensor: NTC thermistor M. Temperature Accuracy: 1 N. Temperature Setting: 5-90 O. Product Size: 86*86*30mm P. Display: LCD screen Q. Frame color: white R. Backlight Color: White/Blue/Orange S. Button: touch the button T. Material: flame retardant PC+ABS U. Additional function: weekly programming/power-off memory V. Current: 3A W. Voltage: Two 1.5V batteries (not included in delivery) X. Protection level/shell material: IP20 / flame retardant PC Y. Package Includes: Z. Smart Thermostat *1 AA. Manual *1