60A Brushless lithium Electric Angle Grinder Control Board Controller Driver Motherboard Accessories Speed Switch Circuit Drive _x000D_ The product is suitable for 60A brushless electric wrenches. It has been tested before selling OK. 21V Brushless Angle Grinder Drive Plate Polishing Machine General Control Panel Size 6.2cm * 5.2cm * 0.9cm. Brushless sensorless angle grinder drive control board general. Control board drive voltage: 18V (5 strings of lithium batteries, fully charged 21V), power 300W. The battery pack marked with 48V, 68V, 88V, 98V, 128VF or TV can be used, and its voltage is actually 18V. Before testing the machine, you must first connect the wire---fix the motor---install the case---tighten the screw---make sure that the square shaft of the head can be easily rotated without jamming---connect the power supply--- Press down the speed control switch so that there is no gap in the shell! Otherwise, there may be a buzzing alarm! To prevent damage to the motherboard, please follow the requirement. Package Contents: 1*Control board Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_