1.Aluminum Alloy Controller Shell: The controller shell is made of aluminum alloy material with grooves, and the good heat dissipation can protect the wires from damage and avoid thermal overload. 2.Stable Performance: The controller board is very stable, with 18 stable moss tubes, which can withstand up to 60A for short periods of time. 3.High Temperature Protection: When the temperature is too high, the controller will cut off the current to protect the safety of the entire system. 4.Matching Voltage and Motor: Matching voltage 48V 52V 60V 72V, matching motor 1000W 1500W 2000W 3000W, match with Hall motor and without Hall motor. 5.Self Learning Function: 48V 72V electric bicycle controller has a selflearning function. The controller is the No. 2 communication protocol. Item Type: Electric Bike Controller Material: Aluminum Alloy Color: As Pictures Shown Weight: Approx. 1100g / 2.4lb Rated Voltage: DC 48V, 72V Maximum Current: 60A Rated Current: 30A Speed Setting: 1-4.2V Brake Input: Low Level Controller Box Size: Approx. 17.2x10.8x6cm / 6.8x4.3x2.4in 1 x Controller 1 x Manual