Features1Aluminum Alloy: The controller housing is made of aluminum alloy with grooved design, which can protect the internal circuit due to its good heat dissipation function, thus avoiding thermal overload 2ABS Shell: The meter shell is made of ABS, the transparent window is made of high hardness acrylic, with functions such as speed, power indicator, fault prompt, mileage display, etc 3UART Communication Protocol: The communication protocol of the motor brushless controller kit is UART, and the working voltage is DC24V, 36V, 48V (meter selection setting). Brushless motor controller provides stable speed and sensitive control 4Regulable Backlight: The meter has functions such as power control, headlight control, 6Km/h jog control, sleep time setting, backlight brightness, voltage level setting, etc 5Scope of Application: There is an instruction label on the interface for easy installation. Suitable for electric bicycles, scooters, etcSpecificationItem Type:ElectricBicycleBrushlessControllerKitProduct Material: Aluminum Alloy, ABSSmart Brushless Controller:Power: 350WCurrent Limit: 181APhase Angle: 60 Degree/120 DegreeUndervoltage: AutomaticMeter:Blue and White Line Transparent Head: LCD Instrument Line1 x Button Three Speed Cable (pink: button signal, black: ground)1 x Anti Theft Alarm (red: positive, black: ground)1 x Anti Theft Alarm (orange: anti theft electric door lock, blue: anti theft signal, green: sensitivity line)1 x High Battery Brake Cable1 x Motor Hall (red: 5V positive, black: ground, yellow, green and blue: hall)1 x 3 LevelsSpeed Change(blue: low speed signal, brown: high speed signal, black: ground wire)1 x 4 Wire Switch (red: 5V positive, black: ground, green: signal wire, yellow: low power brake)2 x White Line Black Head Learning Line1 x Orange Line Black Head Line1 x Green Wire Transparent Head Instrument Wire3 x Yellow, Green and Blue 3 Round Head Motor Wires1 x Anti Theft Power Cord (thick red: power positive, thick black: power negative, thin red: electric door lock)Package List1 x Controller1 x Meter