Speed controller for motor 12V 500W with chain and sprocket 1Good Compatibility: This motor speed control module is compatible with electric bikes, tricycles, and motorcycles, making it suitable for a wide range of applications. 2Good Performance: This motor engine speed controller has good performance, with high efficiency, high torsion, low heat, with anti reverse polarity protection and high current protection. 3Compact And Portable: This motor speed control regulator is small in size and light in weight, which makes it very easy to install and replace. 4Excellent Aluminum Alloy And Steel Material: This motor speed regulator is made of excellent aluminum alloy and steel material, which is sturdy and wear resistant, not easy to be damaged, and has good heat dissipation effect. 5Wide Application: This motor speed controller switch has a wide range of applications, it is suitable for all kinds of DC motors and other applications, it can regulate the speed of the motor very well.