This Peltier controller was specially developed for controlling Peltier modules with fans for air-conditioning control cabinets.
Operating principle:
If the temperature falls below the set heating switching point, the controller switches on the external fan and activates the Peltier element, whereby the direct current direction causes the control cabinet to be heated.
If the set cooling switching point is exceeded, the external fan is also switched on and the Peltier element is activated with opposite direct current direction. The opposite direct current direction cools the control cabinet.