1. 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. 2. Features: 3. Manual/Automatic Mode: Free to choose manual or automatic mode. 4. Accurate Temperature: Automatic temperature acquisition with 1 accuracy. 5. Weekly Programmable: The thermostat supports different temperature settings for 6-time modes per day. 6. Child Lock: The Keypad lock function is designed to prevent children from misuse. 7. Usage: Suitable for gas boiler/heating. Perfect for home, office, shopping mall, hotel, etc. 8. LCD digital display: The gas boiler thermostat adopts an LCD digital display. 9. Parameter: 10. Model: ME83 11. Name: Gas boiler thermostat 12. Temperature sensor: NTC thermistor 13. Temperature Accuracy: 1 14. Temperature Setting: 5-90 15. Product Size: 86*86*30mm 16. Display: LCD screen 17. Frame color: white 18. Backlight Color: White/Blue/Orange 19. Button: touch the button 20. Material: flame retardant PC+ABS 21. Additional function: weekly programming/power-off memory 22. Current: 3A 23. Voltage: Two 1.5V batteries (not included in delivery) 24. Protection level/shell material: IP20 / flame retardant PC 25. Package Includes: 26. Smart Thermostat *1 27. Manual *1