Overview: If you feel tense every time you are at the rear, if you hate the inconvenience of getting a view from your rearview mirror, you will love this helpful car parking sensor. The radar system, which has a detection range of 0.3 to 2.5m (rear) and 0.3 to 0.8m (front), turns on automatically when the car engine is started. 2.5 inch LCD display, digital and obstacle distance showing, which helps you park your car accurately. Besides, when the car is closed to obstacles, it will beep sound step by step, the closer the distance, the faster the alarm sounds. Features: Radar system, turns on automatically when the car engine is started. 4 front sensors and 4 rear sensors. Diagonal simulation screen 2.5 inch, obstacle specific position on LCD display. Dual processor for fast response. Step-by-step sound indication, closer to the obstacle, faster alarm sound. Probe self-testing, abnormal status alarms to avoid collision caused by probe damage. Strong anti-electromagnetic interference, durable and has no effect on the original electronic system. Note: Front and rear probes can display at the same time when reversing Technical data: Detection range from 0.3 to 2.5M (rear) and 0.3 to 0.8M (front). Specific distance detected and shown 30 cm to 250 cm (level accuracy cm). Display mode: LCD display Type: car parking sensor Material: ABS Sensor color: black Sensor diameter: 22 mm Installation mode: drilling Detection angle: H 60 deg;, V 60 deg; Operating voltage: 12V DC (9.6 ~ 16v DCvoltage). Power consumption: 3.6W Operating current: 20 ~ 180 ma. Alarm volume: 65 dB or more. Operating temperature: - 30 ~ + 80 . Ultrasonic frequency: 40 KHZ plus or minus 1 KHZ Power cable length : 0.8m LCD display cable length: 5m Sensor cable length: 2.3m per sensor (rear) / 6m per sensor (front) Wire connection: Red wire - ACC(+) Blue brake light wire (+) Yellow wire - Reverse light (+) Black Wire - Negative (-) / GND (0v) Package Contents: 1 x Control Box 8 x Parking Sensors (4 Front & 4 Rear) 1 x LCD Display 1 x Power Cable 1 x 22mm Drill 2 x Stickers 1 x User Manual Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.