1. Intelligent temperature and humidity controller with heater only.

(1) start the heater when the humidity is greater than the upper limit. Stop heating when humidity is less than the lower limit.

(2) start the heater when the temperature is below the lower limit. Stop heating when the temperature is above the upper limit.

2. Intelligent temperature and humidity controller for cooling type (only with fan).

(1) start the fan when the humidity is greater than the upper limit. Stop the fan when the humidity is less than the lower limit.

(2) start the fan when the temperature is greater than the upper limit. Stop the fan when the temperature is below the lower limit.

3. Comprehensive (with fan and heater) intelligent temperature and humidity controller.

(1) start the fan when the humidity is higher than the upper limit value. When the humidity is less than the lower limit, the fan stops.

(2) start the fan when the temperature is higher than the upper limit value. When the temperature is below the upper limit of -5, the fan stops working.

(3) when the temperature is lower than the lower limit, the heater works; when the temperature is higher than the lower limit value +5, the heater stops.