This controller is used on some of the ERSIN1000 bikes. Operates on 30A and provides 1:5 boost ratio. Completely waterproof and fabulously designed piece of kit. There are connections to attach and operated many functions such as headlights that are controlled by the LCD screen via this controller.  This is the brain of  the e-bike and can be fully adjusted to needs. it will control LCD screen, motor output, battery power output, brakes cut off function, lights ect. 

Please send us a picture of your old controller on Whatsapp after buying this item, so we can check to send you the same one with the correct connections.

Whatsapp number is 07710619485