The Fan controller is intended to control and maximize the useful life of up to four fans simultaneously, with temperature controlled environment the determinant of the operation. The temperature measurement is made by a temperature sensor connected to the plate by a cable. The behavior of the fans with respect to temperature is as follows:

Below 5 ° C , the fans are turned off completely .
5 to 25 ° C, the speed is minimum (15% of the maximum speed ).
Between 25 and 40 ° C, the speed increases linearly with temperature ( from 15% to 100% of the maximum speed ).
Above 40 ° C , the fans operate at maximum speed.
Upon reaching the temperature configurable threshold (40 ° C , 50 ° C , 55 ° C or 60 ° C ) , is sending an alarm signal.
The alarm is also sent by the board if power is interrupted , if the fuse is blown, if the temperature sensor is defective or if one of the fan is locked or locking up .