Product Description
Adjust the speed ways : Stepless speed regulation
Frequency switch : the default location is 20khz (that is, close to the terminal of the 2-pin) by the speed knob 2-pin is 2khz
Note :
1) Speed control board without FG signal test speed function,when wiring, please don't let FG signal speed line connection speed controller
2) Circuit board power supply connection positive and negative can not connect wrong, otherwise the chip will be damaged.
Voltage range : 6v - 30v DC