Features1Aluminum Alloy Shell Controller: The controller adopts aluminum alloy shell, with good heat dissipation performance and wire, which is durable, and can match with all meters of No. 2 communication protocol, applicable to 36V, 48V 250W motor. 2S900 Meter: The shell of the S900 meter is made of ABS material, which has clear display interface. The button operation is very quick and is convenient to use. 3Data Display of Meter: The meter can display speed, power assisted gear, power, fault prompt, total mileage, single mileage and single riding time, which is convenient to read data when riding and help you master the riding dynamics at any time. 4Easy to Install: The electric bike modification controller kit is easy to install and use, and the equipped LCD meter and thumb throttle suitable for 22.2mm handlebars. 5Fully Equipped: This electric bicycle controller kit includes 15A controller, S900 meter, quick release thumb throttle, booster, controller storage bag, etc, which can be used alone or in combination. You can DIY according to your own need.SpecificationItem Type: Electricbicycle controllerkitMaterial: Aluminum alloy, ABSWeight: Approx. 820g/28.9ozController Parameters:Current: 15AVoltage: DC 36V, 48VSpeed Setting: 1-4.2V dual modeBrake Input: Low levelMeter Parameters:Applicable Handlebar Installation: 22.2mm/0.9in diameter handlebarVoltage: 24V, 36V, 48VInterface: 5pinMeter Function Description:1. Display Functions: Speed display, power assisted gear display, power indicator, fault prompt, total mileage, single mileage, headlight display, single riding time display.2. Communication Protocol: No.2 communication protocolPackage List1 x Controller1 x Meter1 x ThumbThrottle1 x Boost Sensor Connecting Wire1 x Boost Sensor Booster Pad1 x Boost Sensor Ring2 x Fixing Strap1 x Controller Storage Package2 x Meter Mounting Screw2 x Meter Mounting Nut2 x Meter Mounting Gasket1 x Meter Instructions