1Controller Outer Housing: The controller housing is made of high quality metal with grooves which is designed to protect the internal circuitry from thermal overload due to good heat dissipation effect. 2Panel Function: LEDS800 panel is compatible with 36V and 48V voltages. While riding, a lot of useful data about your bike can be displayed, such as: intelligent power display which can truly reflect battery power, real time record power consumption, ensure cycling mileage, headlight control, backlight brightness 3 level adjustment, five gear control, mileage display, fault code display, power thrust mode 6km/h, etc. 3Full Kit: There is 22A controller, LEDS800 panel, 130X thumb throttle, 8C power assist sensor included in the package, full kit will be enough to meet your needs to upgrade your bike. 4Application Scope: Suitable for 500W motor, mainly used for DIY electric bike, electric bike, electric scooter, folding bike, etc.; Easy to maintain, the lithium ion bike conversion kit greatly improves the pleasure of riding. 5Easy to Check: The included panel can display much useful date of your electric bike, so that you can clear about your bike state with a glance, providing a satisfying using experience. Item Type: Electric Bike Conversion KitMaterial: Aluminum Alloy + ABS PlasticColor: As Picture ShownApplication: for 500W Bicycle MotorGross Weight: Approx.558g/19.7ozProduct Size: Controller Box 111x53x33mm/4.4x2.1x1.3in, Panel 83x42mm/3.3x1.7inController Rated Voltage: 36V DC /48V DCController Maximum Current: 22AController Speed Setting: 1-4.2VController Brake Input: Low LevelBOOSTER: 1:5Applicable Motor Power: 500W 1 x Motor Controller1 x Panel1 x Thumb Throttle1x PowerAssist Sensor1 x Controller Wiring Manual Please note that the size of the motor matches the controller kit.