1、Full Kit: There is 22A controller, LED900S panel, 130X thumb throttle, 8C power assist sensor and 1T2 connecting line included in the package, full kit will be enough to meet your needs to upgrade your bike. 2、Controller 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. 3、LED900S Panel Function: With multiple functions, you can easily view the data on the panel; When riding a bicycle, the product will display many useful data on your bicycle, such as switch button, battery power indicator, speed indicator dial indicator, gear indicator, start headlamp indicator, 6km / h thrust boost. 4、LED900S Panel: the panel is made of high quality ABS material, which is light and durable, fine workmanship, good toughness and good waterproof performance. It provides better protection for the internal circuit and makes it more durable. 5、Widely Application: Applicable to 500W gear brushless motor. The main use are DIY Electric bicycle, electric vehicle, electric scooter, folding car, etc. Easy to maintain, lithium battery modification of bicycle greatly improves the fun of riding, which is suitable for cyclists who like challenges. Item Type: Electric Bike Motor Controller Material: Aluminum Alloy, ABS Plastic Controller Box Size: Approx. 125 x 65 x 40mm / 4.9 x 2.5 x 1.6in (Allowable error for manual measurement) Weight: Approx. 677g / 23.8oz Rated Rated Voltage: DC 36V / 48V Controller Rated Current: 11A Controller Maximum Current: 22±1A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Controller Low Voltage Protection: DC 30/40±0.5V Suitable for Brushless Motor Power: 500W Joint Type: Fully Waterproof Joint Description of 1 To 2 Lines: One end is connected to the controller, and the other ends are connected to the panel and thumb throttle. Controller Line Definition: 1. Single Red And Black Cable: Power Cable 2. Black Single Large Wire (9pin): Motor Wire 3. Black Single Wire (9pin): 1 To 2 Wires 4. Black Single Wire (3pin): Power Assist Sensor Boost Sensor Wire LED900S Panel Function Description: Switch Button, Up / Down Button, Left Separate Led Indicator: 6km /h Thrust Boost, Speed Indicator Panel: 19 Led Indicator, Battery Capacity: 4 Led Indicator, Power Ratio Gear: 5 Led Indicator, Right Separate Led Indicator: Start The Headlamp 1 x Controller 1 x Panel 1 x Panel Manual 1 x Thumb Throttle 1 x Power Assist Sensor 1 x Controller Wiring Manual 1 x 1 To 2 Connecting Wire