Description: Electric Motor Controller Kit -- Our electric motor controller kit is made of high‑quality aluminum alloy and plastic, and durable and has a long service life. This controller kit is suitable for 36V/48V 250W motors and suitable for DIY electric bicycles. Then, what are you waiting for? How to Use: The interface on the controller can be connected to the socket of the accessory to realize the function. For details, please refer to the wiring diagram. Specification: Item Type: Electric Motor Controller Kit Material: Aluminum Alloy + Plastic Product Color: As Pictures Shown Controller Box Size: Approx. 8.5x5.2x3.1cm / 3.3x2.0x1.2in Product Weight: Approx. 562g / 19.8oz Rated Current: 7A Rated Voltage: DC36V / 48V Speed Setting: 1-4.2V Low Voltage Protection: DC30 / 40±0.5V Maximum Current: 15±1A Package List: 1 x KT 7A Controller 1 x KT-LCD7U Display Panel 1 x Display Manual 1 x Thumb Throttle 1 x Speed Assist Magnetic Point 1 x Wiring Diagram