Item Type: Bike Lithium Battery Conversion Kit Material: Aluminum, ABS, Plastic Weight: Approx. 549g / 19.4oz Controller Voltage: DC24 36 48V Current: 171A Package List 1 x Controller 1 x Panel 1 x Panel Manual 1 x Trigger Shifter 1 x Power Assist Sensor 1 x Power Assist Magnetic Ring 1 x Instruction Manual 1Sine Wave 3 Mode Controller: The kit adopts sine wave 3 mode controller, adapting to brushless motors with or without hall. This kind of controller has self learning function, which can be adjusted according to the characteristics of different motors, providing more accurate and stable power output. 2Multiple Voltage And Power Brushless Motors Applicable: The controller is suitable for motors of different voltages and powers, including 24V250W, 24V350W, 36V250W, 36V350W, 48V250W, and 48V350W hall less Hall brushless motors. 3Heat Dissipation Function: The controller case is made of metal with groove design, which can effectively dissipate heat and protect the internal circuits from thermal overload. This design can improve the stability and service life of the controller. 4Panel: The panel is made of ABS material, which is lightweight, sturdy and durable. Fine workmanship and good toughness can provide better protection for the internal circuit. And it has good waterproof performance. 5Widely Used: Bicycle lithium battery conversion controller kit can be widely used for DIY electric bikes, electric cars, electric scooters and folding bikes. Easy to maintain and install, providing users with higher riding fun.