The shell of the controller is made of aluminum alloy with a groove design, which can the internal circuit and have good heat dissipation to avoid thermal overload.This item is a brushless motor controller provides stable speed and sensitive control of and direction changes. The controller can work quietly.The wires and interfaces are rugged and durable, ensuring long-term with fewer failures.The interface has an instruction label for easy installation.Suitable for electric bicycles, scooters, etc.Features:1. Low-voltage overcurrent protection2. E-ABS/High/Low brake3. Regenerative (with on/off switch)4. Cruise control5. Backward/backward (usually 50% of the forward speed, the can be set according to customer requirements)6. 3 speed (we usually set the standard 3 speed as 80%--110%, when you 't the switch, the speed is )specification:Working voltage: 48-60VWhether waterproof: yesRated : 1000WLow voltage cut-off: 41/51 V0.5VBrake level: high/low levelPhase angle: 60/120 degree universalWaterproof level: splash waterSuitable for: electric bicycles, scooters, etc.Colour:BlackMaterial:Aluminum alloyPackage Contents:1 * Dual mode brushless controllerOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.