NULKOMMA JH4AJ2819DZYK Controller for Electric Bicycle DC48V 21A Brushless DC Motor Controller Ebike Controller

【Customized Product】To make sure your purchase matches your bike, we will contact you after you place your order. Please keep an eye on the message we send you after you place your order and reply in time, thank you for your cooperation! 【Sensitive Control】JH4AJ2819DZYK brushless motor controller can provide steady speed and sensitive control of braking and direction changes. The wires and interfaces are durable, and ensure low malfunction of long time use. 【Good Heat Dissipation】The controller shell is made of aluminium alloy, which can protect the inner circuit and good for heat dissipation to avoid thermal overloading. This controller shell is excellent in performance and can perfectly match your needs and use. 【Easy Installation】The interfaces have instruction labels on them for your easy installation. It is very suitable for electric bicycles, scooter, etc. Please read the labels on the interfaces of the controller, make sure that every interface is rightly connected to what it matches. 【GUARANTEE】If you are not satisfied with our product received, you can apply for unconditional return and refund within 180 days. In terms of any problem of this product, you can send emails to us at any time. We will reply you as soon.