Features1Grooves Design: The controller housing is made of high quality metal with grooves design to protect the internal circuitry from thermal overload due to good heat dissipation. 2Diverse Features: Brushless motor controller provides steady speed, responsive braking and directional change control. 3Good Performance: High performance cable and interface, durable, ensuring long term use of low failure rate. 4Simple Operation: Brushless motor controller is easy to install and use, with wiring identification instructions, usually suitable for 750W brushless motor. 5Manufacturing Material: Made of high quality aluminum alloy material, it is strong and durable, which undoubtedly extends its service life.SpecificationItem Type:750WElectricBicycleControllerWeight: Approx.409g / 14.4ozMaterial: Aluminum AlloyController Box Size: Approx.125 x 66 x 39mm / 4.9 x 2.6 x 1.5inController Type: Sine Wave ControllerConnector Type: Common ConnectorMaximum Current: 251ARated Voltage: DC 36V/48VSpeed Setting: 1-4.2VRated Current: 12ABrake Input: Low LevelLow Voltage Protection: DC 30/400.5VController Line Color Definition:1. Long Black Cable: Motor Cable2. Red And Black Single Large Cable: Power Cable3. Red, Blue, Black, Green And Yellow Five Cables Port: Meter Cable4. Red And Black Cables (2pcs): Light Cables5. Red And Blue Cable (2pcs): Power Off Brake Handle Cable6. Red And White Cable: Throttle Dial Cable7. Brown, Black And Yellow Cable: PAS Assist Sensor CablePackage List1 x Controller1 x Manual