4 PACK 12V24V8A EBM turbo blower exhaust fan pump 9733 governor barbecue oven Controllers

How to use?
1. Connect wires refer to the product wiring label.
(Red wire connects the positive power; black wire connects
negative power;blue wire connects the positive of fan; gray
wire connects the negative of fan.)
2. Turn on the power, and adjust the potentiometer.,
Package Includes:
1* 9733 Controller
Operation instristment:
Before you attempting to wire the controller, make sure
power is off.
WARNING: DO NOT REVERSE POSTIVE AND NEGATIVEPOWER LOADS AND DC FAN.THIS WILL DAMAGE THECONTROLLER.