Features: Supply voltage:10.5V-15V(12V nominal) Current consumption:200 mA max Working temperature:20C-65C Storage temperature:35C-85C the Diameter length : 22 mm Obstacle detection:from 150 cm from the bumper (post dia. 80 mm) Reliability over time:satisfies the strictest automotive standards Pack contains: 1 command module 4 ultrasonic sensors 1 power supply cable 1 hole borer 1 accessory kit 1 instruction manual Highlights: 1. The LED display gives Be-Be- sound when alarming. Specifications: 1. Rate Voltage: 12V 2. Operating Voltage Range: 9~16V 3. Rate Current: 20~200mA 4. Detecting distance: 0 - 2.5m 5. Ultrasonic Frequency: 40KHz 6. Working Temperature: -30~80degC 7. Display Working Temperature: -20~60degC Features: 1. Size of LED display: 9.9 x 2 x 2.6 cm 2. Length of cable of LED display: 5m 3. Size of main control box: 8.9 x 6 x 2.2cm 4. Weight of whole kit: 388g 5. 4 sensors 6. Advanced chipset for enhanced coverage and detecting 7. LED display: digital and 3-color light bar 8. Detect small objects and bars 9. Enable you to prevent dangerous and costly collisions 10. Provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. Package: 1 x Main Control Box 1 x LED Display 4 x Parking Sensors with 2.5m Line 1 x Power Cable 1 x Hole Saw 2 x Double Sided Adhesive Pad 1 x User manual