This controller is used on wide range of folding e-bikes. This device is rated at 36V  and can handle motor sizes between 250V-350V easily. 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. 

This controller is used on all ERSIN350 bikes. the 16inch and 20inch models.