Features 【Easy To Use】Optimized layout and wiring.Excellent sound quality even with a few peripheral components. 【High Quality】Wire of brushless motor should be connected firmly with drive board 【Main Functions】this digital low voltage protector is functional and practical, contains various functions, over charge protection, reverse voltage protection, short circuit protection function, over current protection function 【Application】Suitable for hard brushless motor, brushless motor drive and other miniature 3-wire or 4-wire brushless motor without hall. 【Guarantee】If you have any questions about the product, please email us, we will reply you and solve your questions within 24 hours. Description : The driver board can drive hard disk brushless motors, CD-ROM brushless motors and other micro brushless motor of line 3 or 4 wires without hall sensor.  Specifications : Drive Voltage Range:  DC 9 V-12 V  Suggested Voltage Range: 9 V-12 V Current: ≤1.8 A(if higher than 1.8 A, chip might be burnt) Working Current: ≤1.2 A Speed Control Range: 0%-100% Phase Inversion Control: Support Reverse Voltage Protection: Support Over Current Protection: Support Weight: 24 g(approx.) Package includes: 1 x Motor Drive Board Note : The wire of brushless motor should be connected firmly with drive board. Bad connection may cause item burnt. Please use large wires, because of the clearance of screw. Package List