There are two relays. Switch between cooling and heating modes. Support for Fahrenheit /Celsius display
Overheat Protection of Home Appliances, hatching, Seedling pads, constant temperature Circulation and other Electrical Appliances
By setting the temperature set-point and the difference between the temperature set-point and the difference
Alarm when temperature is out of limit or sensor is wrong
Switch between refrigeration and heating modes, temperature calibration