The length and width of module is 78x57mm, the thickness of the plate is 1.6mm, and the working voltage is 6-80V, which supports the anti-reverse connection protection and not damage the module due to the reverse connection of the power cord. By default, the module is a bare board. If you drive a motor with a current of less than 5A, you don't need to force heat dissipation, but you only need to normal ventilation. If the driving current exceeds 5A, you must force heat dissipation. The heat sink provided by our company can last for 20A. The 5pin Hall interface of the board is used to connect the Hall signal of the motor. On-board LED indicator is used for standby, working, error and other states. On-board potentiometer (0.5-5V), PWM speed regulating interface (frequency 1-20KHz), duty cycle 10-100%. On-board FG speed feedback interface, calculate speed RPM = FG frequency Hz*60/pole . On-board CW/CCW steering interface, the suspension is clockwise CW, and the short circuit GND is counterclockwise CCW steering. On-board UART serial port, users can control the module through serial port protocol. The onboard burning interface is used to update the burning program. Application fields: pumps, medical equipment, compressors, fans/blowers, electric screwdrivers, electric curtains, automatic doors, hydraulic oil pumps, air pumps, DC brushless compressors for refrigerators, lawn mowers, sprayers, underwater propellers, etc. This product is a driving module developed for induction BLDC motor. The main control chip is SNR8503M, and the special circuit for induction motor driving is integrated in the chip, which supports the Hall angle of 120 degrees or 60 degrees, and the default value is 120 degrees. It has the characteristics of simple peripheral circuit, perfect function, small volume, simple debugging, high driving efficiency, flexible application and wide application. Color:As Shown Material:PCB Package Contents: 1set * brushless DC BLDC three-phase Hall motor driver board controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.