Features1Complete Accessories: Kit includes for JN controller, V889 display panel, power sensor wiring; power sensor power plate. Suit variety, suitable for their own DIY refit, to meet all needs 2Heat Dissipation Function: The controller enclosure is made of metal with a groove design, which protects the internal circuit due to its heat dissipation function, thus avoiding thermal overload 3Waterproof: The display panel is made of ABS material, light and strong, durable, fine workmanship, with toughness and waterproof performance, to provide better protection for the internal circuit, so that it is more durable 4Multiple Functions: For V889 display panel has multiple functions. When riding a bike, the product will display many useful data on your bike, such as switch buttons, light switch, battery level display and other functions, a display can keep you abreast of the situation 5Application: The kit is suitable for 250W 350W motor, main purpose is DIY electric bicycle, electric bike, electric scooter. Easy to maintain, the bike lithium electric modification greatly improves the fun of riding, suitable for cyclists who like a challengeSpecificationItem Type: Motor Controller SetMaterial: ABS, Rubber, Aluminum Alloy, MetalWeight: Approx. 807g / 28.5ozApplication: 250W 350W Motor Matching Newsletter Protocol for JN Product Use (Custom 2 Newsletter Protocol)Controller Size: Approx. 85x50x30mm / 3.3x2.0x1.2inController Current: 15AController Voltage: DC 36V 48VController Speed Setting: 1.1 to 4.2VBrake: Input Low LevelPackage List1 x Motor Controller1 x Display Panel2 x Brake Handle1 x Power Assist Sensor1 x Power Assist Sensor Magnetic Disk2 x Instruction Manual