Features1Aluminum 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. 2Stable Performance: The controller board is very stable, with 18 stable moss tubes, which can withstand up to 60A for short periods of time. 3High Temperature Protection: When the temperature is too high, the controller will cut off the current to protect the safety of the entire system. 4Matching Voltage and Motor: Matching voltage 48V 52V 60V 72V, matching motor 1000W 1500W 2000W 3000W, match with Hall motor and without Hall motor. 5Self Learning Function: 48V 72V electric bicycle controller has a selflearning function. The controller is the No. 2 communication protocol.SpecificationItem Type:ElectricBikeControllerMaterial: Aluminum AlloyColor: As Pictures ShownWeight: Approx. 1100g / 2.4lbRated Voltage: DC 48V, 72VMaximum Current: 60ARated Current: 30ASpeed Setting: 1-4.2VBrake Input: Low LevelController Box Size: Approx. 17.2x10.8x6cm / 6.8x4.3x2.4inPackage List1 x Controller1 x Manual