Features: Adopts a blind spot detection system featuring one transmitting and multi-receiving. Can operate normally under circumstances of poor visibility (such as rain, fog, night). Independent action system with no need to connect OBD and does not affect warranty. Installed on both sides of the back bumper to ensure invisibility. Four-in-one function: blind spot detection warning（BSD), lane change alert（LCA), rear cross traffic alert（RCTA), door opening warning. After starting the vehicle, BSD system would start-up. LED light will turn on when there is vehicle in blind spot. LED light will blink and the buzzer will alarm when the turn light is on and there is vehicle in blind spot. Specification: Condition: 100% brand new Material: ABS + LED + glass Detection Range Accuracy: 0.1M Maximum Detection Range: 15M Warning Range: 3-15M System Warning Accuracy: 0.1M Warning Method: Sound & light IP Rating: IP67 Warning Time: Minimum warning reaction time 0.75sec Rated current: 130ma±50ma Working Voltage: 12V-24V Working Frequency: 24GHz-24.25GHZ Level Angle: Frequency emission 42*80 Speed Range: -20m/s~20m/s, 72M Working Temperature: -45°C~85°C Storage Temperature: -45°C~85°C Package Weight: 2253g/79.5oz Fitment: Fits for Ford Edge 2015 Package list: 1 * Blind Spot Detection System 1 * Pair of Blind Spot Mirror(Blue LED) Fits for Ford Edge .