Packing List: Including 48V 1000W rear drive 20 inch motor wheel, 30A controller, LCD S866 instrument, 130X dial, D12 booster, a pair of power off brake levers, controller bag and manual. Brushless Wheel Hub Motor: Aluminum alloy rim is selected and treated with fine craftsmanship, which effectively enhances the edge of the rim. Looks light and high end, with strong carrying capacity and far more comfort than other types of motors. 48V 1000W Rear Drive 20 inch Motor Kit: Suitable for cycle lit battery modification, DIY electric cycle, electric vehicle, electric scooter, folding cycle, etc. Easy to maintain, electric cycle moped mountain cycle modification conversion motor, high efficiency, greatly improves riding fun, for cyclists who like challenge. LCD Backlight Display: LCD S866 display meter has a variety of functions, which can clearly display the status and data. When riding cycle, it will display many useful data on your cycle, such as battery display, speed display, battery indicator, fault indicator, total mileage, single mileage, current speed, average speed, maximum speed, gear display, etc. Controller and Instrument Material: Controller housing is made of high quality metal with groove design, it can protect the internal circuit due to good heat dissipation, thus avoiding thermal overload. Instrument is using ABS material, it is light, strong and high durability, with good toughness and water resistant performance, providing better guard for the internal circuit. Item Type: 20 inch Electric Cycle Motor Wheel Kit Color: As Pictures Shown Weight: Approx. 9400g/331.6oz Material: Stainless Steel + Aluminum Alloy + ABS Plastic Size: Controller Box: Approx. 150x83x42mm/5.9×3.3×1.7in, Meter: Approx. 80x48mm/3.2×1.9in Motor Type: Rear Drive Motor Wheel Motor Rated Voltage: 48V Motor Rated Power: 1000W Motor Speed: About 35-45km/h Motor Speed: 325-331 RPM Motor Torsion n. M: 57.5-59 N. M Motor Opening Size (mm): 135-142mm/5.3-5.6in Motor Matching Controller Current: 30A Motor RIM: P25D Motor Torsion Arm: M14 Brake Disc for Motor: Approx. 160mm/6.3in Motor Brake Type: V Brake, Disc Brake Universal Motor Position: Rear Wheel Motor Structure: direct current motor Motor Magnet Height: 30H Motor Magnet Pole Number: 46 Motor Operating Temperature: -20? -45? Controller Rated Voltage: DC36V/48V Controller Maximum Current: 30A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Controller Booster: 1:5 Connector: Ordinary SM Connector Controller Wire Color Definition: 1. Yellow, Green, Blue Single Big Head Line: Motor Phase Line 2. Red-white-black-blue-green-yellow Double Row Six-wire Port: Motor Hall Wire 3. Red and Black Single Big Head Line: Power Line 4. Red, Blue, Black, Green and Yellow Single-row Five-wire Port: Instrument Line (5pin) 5. Black and Yellow Lines (two): Power off Brake Handle Line 6. Red and Black White Lines: Throttle Dial Line (3pin) 7. Brown, Black and Yellow Wire: Power Sensor Wire (3pin) 8. Black and Red Lines (two): Headlight Lines LCD S866 Meter Working Voltage: DC24V, 36V, 48V, 60V Compatible (meter Selection Setting). LCD S866 Meter Meter Function Description: 1. Display Function: Speed Display, Battery Indicator, Fault Indicator, Total Mileage, Single Mileage. Control Setting Functions: Power Switch Control, Wheel Diameter Setting, Idle Speed Automatic Sleep Time Setting, Backlight Brightness Setting, Startup Mode Setting, Drive Mode Setting, Voltage Level Setting, Controller Limit Value Setting. Communication Protocol: UART Display All the Contents of the Screen (full Display for 1S After Booting) 3.1 Display of Battery Power and Remaining Power of Bms. 3.2 Multifunction Display Area: Total Mileage Odo, Single Mileage Trip (unit: Mile, Km), Single Boot Time Time, Battery Voltage Vol, DST: Battery Life. 3.3 Speed Display Area Avg: Average Speed, Maximum: Maximum Speed, Speed: Current Speed: Unit Mp/h Km/h The Speed Signal is Taken from the Hall Signal in the Motor and Sent to the Meter by the Controller. (the Time of a Single Hall Cycle, Unit: 1ms) the Instrument Will Calculate the Real Speed According to the Wheel Diameter and the Signal Data (the Number of Magnets Required by the Motor Hall). 3.4 Vehicle Power Gear Adjustment, 0-9 Digital Display and Gear Bar Display. 1 x Motor Wheel. 1 x Instrument Manual. 2 x Power off Brake Lever. 1 x Throttle Dial. 1 x D12 Power Assist Sensor Wiring. 2 x Cable Ties. 1 x Controller Bag. Use the product that complies with the communication protocol. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.