Specification: Item Type:36V48V25AControllerS866Display Kit Material: ABS, Rubber, Aluminum Alloy, Metal Color: As Pictures Shown Weight: Approx. 867g / 30.6oz Application: Applicable to 750W Motor, Matching Communication Protocol is UART (commonly known as No. 2 communication protocol) Controller Size: Approx. 120x53x33mm / 4.7x2.1x1.3in Controller Rated Voltage: DC 36V, 48V Controller Current: 25A Controller Speed Setting: 1.1-4.2V Supercharger: 1:5 Applicable Motor Power: 750W Brake: Input Low Level Controller Line Definition: 1. Black Single Wire: Motor (9pin) 2. Black and Red Single Wire: 2 Battery Power 3. Black, Yellow and Brown Wire: Power Assist Sensor (3pin) 4. Black, White and Red Wire: Throttle (3pin) 5. Black and Yellow Wire: 2 Brake (2pin) 6. Black and Red Wire: Headlight (2pin) 7. Black and Red Wire: Rearlight (2pin) 8. Multi Color Wire: Display (5pin) Package List:1 x Controller1 x S866 Display (Including Bracket, Line)1 x Throttle Dial (Wire Included)1 x 8C Power Assist Sensor Wiring1 x 8C Power Assist Sensor Sheet1 x Headlight (Wire Included)1 x Tail Light1 x Tail Light Wire1 x Horn Light Button (Wire Included)1 x Four in One Cable2 x Manual