Car Blind Spot Detection System 24GHz IP67 Waterproof Intelligent Identification BSD Lane Change Assist 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.