Features: 1.Supports multi-level protections of over current protection and reversing voltage protection. 2.Comes with 4 channels. 3.This brushless motor driver board can control 4 pieces of 3-wire brushless motors simultaneously. 4.Supports phase control. 5. material enables it to work for a long time. specification: Supports multi-level protections of over current protection and reversing voltage protection. Comes with 4 channels. This brushless motor driver board can control 4 pieces of 3-wire brushless motors simultaneously. Supports phase control. material enables it to work for a long time. : Product type: Brushless Motor Driver Board Material: ABS Channel: 4 channels Working voltage: DC 8-18V Working current: 5A Speed range: 0% - Phase control: Support Protection: Over current protection, reversing voltage protection Package size: approx. 13 x 7.5 x 1.5 cm/ 5.1 x 3.0 x 0.6 in Package weight: 60g/ 2.1oz Package List: 1 x Brushless Motor Driver Board Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.