ST855W is a digital thermostat with a large LCD screen and full touch buttons. It detects the indoor temperature through a high-precision sensor inside the thermostat. Compared with the temperature set by you in real time, it can automatically adjust the air intake for heating and cooling or switch the electric valve to maintain the indoor temperature. With this thermostat, you can enjoy the considerate service every day.

1. Universal--WIFI
2. Up to 2 Heat, 2 Cool Conventional
    Up to 3 Heat, 2 Cool Heat Pump
3. Auto Changeover
4. Easy menu driven programming
5. Intuitive wake, leave, return, sleep programming icons
6. Electric or Gas configurable
7. Room temperature calibration adjustment
8. Separate heating and cooling swing (cycle rate) adjustments Keypad lockout
9. Heating and cooling setpoint limits
10. 5 minute compressor delay protection (selectable on or off)
11. Filter change indicator(selectable on or off)
12. Easy wire color coded terminal blocks
13. Universal sub-base

14. 7 Day, 5/1/1 or Non-programmable

15. White/Blue/Green backlight

16. Mounts on wall or junction box

17. Simple private label badge system

18. 24v power