Product Function Introduce: 1.This system is a vehicle assistance device that helps driver lane changing safely during driving. 2.With the aid of 24GHz microwave sensor, probe the side / rear of the vehicle for those moving objects into the blind spot of the detection zone. 3.The system works in a set of a control box (controlled by computer), two microwave sensors, two blind region monitor (or LED light), a buzzer and the wire harness which is the perfect connection of microwave and computer. 4.There is blind zone at the rear of the vehicle which is easy to endanger driving safety.! When you installed BSM into your lovely car, no matter it's day for time, night for time or even in the snow,you can be alerted whenever there is a moving object for pop into the rear of the vehicle, with the aid of LED lighting on , blinking, buzzer sound so that the driver can be cautious when lane changing to avoid the possibility of side crash accident. 5.When you get ready to get off, open the door,if someone moves behind, it will also give an accurate alarm. 6.During the lane change, when a moving object is detected in the rear blind zone, there will be a double warning of the light bulb to remind the driver to improve the safety of the lane change. (A warning light will be issued within 10 meters) Product Features: Original Factory Manufacturer Produced,Good Quality Assurance Type:Universal Blind Sport Monitoring System (BSM) Specification: Electricity Voltage : 12V Maximum Power : 5W (max) Working Temperature : -40 +85 Storage Temperature : -40 +85 Waterproof level :IP67K Detection Range : Lateral Distance : 0.for 3m 4m; Rear side Distance : 0.for 3m 10m. Detection Range Accuracy : 96 Alarm Range : 0.3m-10m System Alarm Accuracy : 96 Alarm method : Method 1 => LED light turn on. Method 2 => LED flash and buzzer sound. About installation: We Will Send The Product With a Detailed English Instruction(With Installation drawing), Please Read The Instructions Carefully Before Installation!!! Note: 1. Please prepare necessary disassembly tool and protective bumper painted sponge pad or cloth pad. 2. When you disassemble connector, MUST NOT pull wire harness in force, otherwise, will broken the harness. Please plug in connector until it practically tightened (you can hear the sound of "Click"). 3. The wire harness should be fixed with the car cable harness by tie band. Neither droop nor abnormal sound. Cut off excess tie band. 4. Disassemble and assemble procedure, please strictly follow our installation manual. Try not to break parts as careful as possible. In for case of breakage, please change the parts immediately. 5. Microwave sensor installation cautions points: - Microwave sensor (signal launching surface) can only penetrate the plastic bumper for case. - Microwave sensor (signal launching surface) in the front, must be no metal intervention. - Should not install microwave sensor opposite to fluorescent light. Package Include: 1 Set Universal Blind Spot Monitoring System