Features: 4 sensor system, double CPU and advanced chipset for enhanced coverage and detection (0.2-2.5m). With digital colored LED display (number & light). Help to prevent dangerous and costly collisions. Help to provide increased safety for paengers, pedestrians and family members who happen to be around the moving vehicle. Detect small children and low walls as well. Anti-freeze and rain proof. Easy to install. Function: The Parking Sensor will automatically open when the car into the reverse gear, detection range: 0.2-2.5M, all-round detection. Ultrasonic frequency: 40 1kHz Bi-Bi alarm, left and right obstacle identification, digital band display, obstacle distance digital display Microcomputer intelligent control, dual-core proceing system, probe self-test function. Super anti-electromagnetic interference, durable, and the original electronic system without any impact Specification: Type: Car Parking Radar Kit Material: Plastic Color: Silver, White, Black, Red, Blue, Gray Rate Voltage: 12V DC Rate Operating Range: 10.5V - 16V DC Rate Current: 20mA - 200mA Detecting Distance: 0.2-1.5m/1-8.2ft Ultrasonic Frequency: 40KHz+/-1KHz Waterproof: IP66 Alarm Volume: 80dB Working Temperature: -30- 80 Celcius Size: As the Pictures Package Included: 1 x Main Control Box 1 x LED Display 4 x Parking Sensors 1 x Power Cable 1 x Hole Saw 2 x Double Sided Adhesive Pad 1 x User manual