Auto Parking Aid System -Digital sensor design, -Water-resistant service connectors, Auto Parking Aid ... obstacle, the faster the beep frequency,-Rated Voltage: DC12V,-Operating Temperature: -40°C to +85°C,-Max Detect Range: 1.5m ... ,-Detect Angle: Horizontal 120°, Vertical 60°,-Audio Warning:5 status High quality and reasonable price auto parking aid system