Feature 1Sine Wave 3 Mode Controller: Matched for Hall free and Hall brushless motor with self learning function. Applicable 24V250W 24V350W 36V250W 36V350W 48V250W 48V350W for Hall and Hall free brushless motor. 2Metal Housing: The controller housing is made of high grade metal with a fluted design, which protects the internal circuit due to its nice heat dissipation function, thus avoiding thermal overload. 3ABS Panel: Light, strong and durable, fine workmanship, nice toughness and waterproof performance, providing better protection for the internal circuit, making it more durable. 4Main Uses: DIY electric bicycle, electric scooter, folding bike, etc. Meet the needs of different bike modifications, enhance the fun of life. 5Improved Riding Pleasure: Easy to maintain, the bike lithium electric modification greatly improves the riding pleasure, suitable for cyclists who like a challenge.Item Type: ElectricBikeRetrofitKitWeight: 587g/20.7ozMaterial: Aluminum alloy and ABS plasticController Voltage: DC24V 36V 48VCurrent: 171A .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Controller1 x Panel1 x PanelManual1 xThumbThrottle1 x 1 to 2 Waterproof Cable1 x Power Sensor1 x Power Assisted Magnetic Coil1 x Instructions