- 
	Compatible with T6820 series controllers 
- 
	Digital display of sensing temperature and user selected temperature setting on demand 
- 
	Adjustable Heating, Cooling and Ventilating mode control 
- 
	Adjustable manual 3-speed and Automatic fan speed control 
- 
	Adjustable high and low setpoint limits 
- 
	Push-button selection of Enable/Disable operation 
- 
	Provided temperature calibrating function 
- 
	Provided Enable/Disable key locking function 
- 
	Provided low temperature protecting function 
- 
	Provided power failures re-start function 
- 
	Non-volatile memory (EEPROM) retains user settings during power loss 
- 
	Provided self-diagnostic function 
- 
	Backlight function available(optional)