Performance parameters: Operating voltage: DC8-60V (must be equal to the fan voltage, if you use 12V fan is powered 24V will burn the fan). Operating Current: Control Panel Operating Current 35mA (12V) 22mA (24V). Control capability: no fan current limit, but the board fan interface pin current should not be greater than 3A current, use a larger current fan Please connect the fan power cord directly to the main power supply! Control output range: 10% -100 (this is only the signal output range, the actual situation depends on fan performance). Temperature probe specifications: NTC 10K B = 3950. Temperature measurement: -9.9 to 99.9 degrees Celsius error 2 (1% probe 70 degrees Celsius) 3 (70 degrees Celsius above). Temperature range: Acceleration temperature 5-94 , full speed temperature 10-99 . Speed measurement: 10-9990 rpm, more than this speed is always displayed 999, resolution 10 rpm, the display unit is * 10 rpm (speed measurement in accordance with the common 2-pole signal fan design, the vast majority of fans are 2-pole signal). Stop alarm speed: less than 375rpm. Circuit size: 65mm * 65mm * 15mm, positioning hole center distance 56mm * 56mm diameter 3.2mm. Weight: motherboard + a pair of 1-meter-line cylindrical probe total of about 40g, a separate motherboard weight of about 23g.