Specification:Item Type: Electric Bicycle Controller Display KitMaterial: Aluminum Alloy + PlasticProduct Size: Controller Box: Approx. 171x83x42mm / 6.7x3.3x1.7, Dispaly Line Length: Approx. 180cm / 5.9ftController Connector Type: Ordinary Connector Controller Rated Voltage: DC 36V/48VController Rated Current: 15AController Maximum Current: 30±2AController Speed Setting: 1-4.2VController Brake Input: Low LevelController Low Voltage Protection: DC 30/40±0.5VApplicable Motor Power: 1000WFunction Description of Display Instrument:Switch button, up button, down button, battery level indicator, throttle mark, 6km/h thrust assist, brake sign, cruise sign, travel distance, total distance, backlight and headlights, power assisted sensor sign, maximum speed, riding speed (metric system), battery voltage, distance (metric system).Package List:1 x Controller1 x LCD4 Dispaly1 x Dispaly Manual 1 x Controller Wiring Manual Note:1. The communication protocol of products must be applicable to products of the same brand.2. Please allow 1‑3mm error due to manual measurement. Thanks for your understanding.3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.