Ultrasonic Blind Spot Monitoring System to Eliminate "Blind Spots" We are in Action By installing two radar probes in the rear bumper of the car to detect signals at the speed of the vehicle, the system analyzes and processes the transmitted signals to know the distance, speed, and direction of movement of the vehicle behind. Through the system algorithm, the fixed For objects and far away objects, when a vehicle approaching in the blind area is detected, the indicator light flashes. At this time, the driver cannot see the vehicle in the blind area, but he can also know that there is a vehicle coming from behind, and the lane change has a collision, if the driver still did not notice the indicator light flashing at this time and turned on the indicator light and was ready to change lanes, then the system would sound the BI BI BI alarm to remind the driver again that the lane change at this time is dangerous and should not be changed.Through the whole driving process, continuous detection and reminding can prevent traffic accidents caused by potential hazards such as bad weather, driver negligence, blind spots in the rearview mirror, and novices during the driving process. Basic Working Principle of the BSD System: Turn on the system when the vehicle is running, and when a vehicle is 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 light up to remind. Specification:Type: Universal Blind Sport Monitoring System (BSM)Electricity Voltage: 12VMaximum Power: 5W (max)Working Temperature: -40℃ ～ +85℃Storage Temperature: -40℃ ～ +85℃Waterproof level: IP67KDetection Range: 0m - 5m.Detection Range Accuracy: ±3cmPackage includes:1 X Universal Blind Spot Monitoring System