Features 1、Accurate Distance Measurement: 4 sensors with 22mm diameter, providing full 360 degree monitoring in X, Y, and 60 degree directions. It accurately detects obstacles within the range of 0.3M‑2.0M, ensuring safe reverse driving and a smoother driving experience. 2、Visual Smart Display: The reverse radar displays obstacle distance in clear two digit numbers and is equipped with a colorful glowing warning bar. It offers accurate and reliable reverse information in both day and night. 3、Rich Prompt Sound: The reverse radar adjusts sound frequency intelligently based on the distance of obstacles. As obstacles get closer, the rhythm of the sound increases to remind you to stay safe with a 65dB buzzer. 4、Simple Installation: With a 5M display cable and a 2.5M sensor cable, installation is a breeze with simple drilling steps. The adequate length of cables ensures easy installation for all types of vehicles, making it convenient and tidy. 5、High Stability: Made of ABS material, the reverse radar is impact resistant and can withstand harsh environments. With a wide working voltage range of DC 9V~15V and a rated voltage of DC 12V, ensuring your driving safety. Specification Item Type: Car Reverse Backup Radar System Material: ABS Working Voltage: DC 9V-15V Rated Voltage: DC 12V Sensor Quantity: 4 Sensor Diameter: Approx. 22mm/0.87in Sensor Direction: X, Y, 60 degrees Sensor Installation: Drilling Detection Distance: 0.3-2m / 11.81-78.74in Alert Sound: bibi three level alert sound Buzzer Volume: 65dB Sound Frequency: 1.6-2.0m/0.5Hz (Slow), 1.1-1.5m/1Hz (Slow), 0.6-1.0m/3Hz (Rapid), 0-0.4m (Continuous) Display: Two digit distance display, seven color flashing warning bar Display Cable Length: Approx. 5m / 16.40ft Sensor Cable Length: Approx. 2.5m / 8.20ft Package List 1 x Display 1 x Controller 1 x Power Cable 2 x Double Sided Tape 1 x Drill Bit 4 x Radar Sensor 1 x User Manual