Generic PZ300 Car Reverse Parking Radar 4 Sensor Security System Hardwire Kit

-With this Parking Sensor system installed, drivers can lower the risk of accident. This affordable parking sensor enhances the process of parallel and backup parking designed for your concerns about safety and for vehicles that have poor rear visibility. The system will work automatically to detect the obstacles at the rear of your car at any time. All parts are designed with professional grade quality. -The system is automatically activated when you engage reverse gear. Small sensors are recessed to the rear of the vehicle, they send and receive ultrasonic radio waves, which bounce off obstacles and alert you to their presence. The internal buzzer that gradually increases in frequency as you approach the object. -Voltage: DC 9V-DC 15V -Rated voltage: DC 12V -Power cost: Max 1.5W -Respond distance: 0.4m-2.0m -Alarm distance: 0m-2.0m -Sensor diameter: 22mm -Install mode: drill -Sensor angle: X, Y, 60c -Work temperature: -30?c-80?c -Alarm volume: 65dB Package Weight: 432g Package Dimensions: 27cm x 17cm x 7cm