Feature: 1. Blind Spot Detection System: This blind spot monitoring system is an auxiliary device for safe driving of vehicles, which can help you detect possible collision risks in blind spots during driving. 2. Dual Alarm: Radar blindspot detection system alerts the driver to avoid side collision more effectively through audible and visual dual alarm, so as to improve personal safety and reduce vehicle loss. 3. Intelligent Recognition: The system can distinguish between stationary and moving objects. In the detection range, if the radar detects moving target cars, pedestrians, bicycles, etc., the LED lights up to warn the driver; If the car's turn signal lamp is turned on, it will be accompanied by an audible alarm. 4. 24GHz Wave Radar Sensor: Using a 24GHz millimeter wave radar sensor chip, using one transmitting and 3 receiving radar antennas, equipped with advanced computer algorithms and waterproof plugs, the detection range can reach 25m. 5. High Performance: Radar sensor blindspot detection system has high grade waterproof, IP67 waterproof, can be used in any weather and road conditions. Specification: Item Type: Car Blind Spot Monitoring System Material: PVC + Metal Voltage: 12V Maximum Power: 5W (Maximum) Working Temperature: - 40 ℃-+85 ℃ Storage Temperature: - 40 ℃-+85 ℃ Waterproof Grade: IP67 Detection Distance: Approx. 25m / 82ft Detection Range Accuracy: ± 3cm Operating Frequency: 24GHz Waterproof Grade: IP67 Applicable Model: Universal Controller: 1. Working Voltage: 10.6V-16V 2. Working Current: Less Than 200mA 3. Operating Temperature: - 40 ℃-+85℃ Basic working principle of BSD system: After the vehicle starts, the system will be turned on. When the surrounding vehicles are found within the detection range of the ultrasonic sensor, the LED will light up to remind. When the turn signal is turned on and ready to change lanes, it will sound and the LED will illuminate to remind.. Package List: 1 x Buzzer2 x Radar Probe4 x Bracket3 x Wire Harness8 x Small Screw8 x Large Screw1 x Ruler