Detailed Product Description1. Universal car used parking sensor2. Volume adjustable 3. Red power line connector for false-proof Function:Rear parking assist Description:1.Step-up sound frequency: closer and quicker 2.Volume adjustable 3.Red power line connector for false-proof 4.High reliability and sensitivity 5.Sensor color optional 6.Easy installation 7.Compatible with all car models8.All weather design Technical Data:Rated Voltage 12V Operating Voltage 10-16V Rated Current 200mA Detection Distance 2.0m Working Temperature -20°C-+70°C