Features:1.100% brand new & top quality.2.Dispersing no visible parts ， so you should know it's fitted.3.Detects objects at 3 feet or less.4.Electromagnetic field changes as object get closer to the bumper.5.Auto-induction，indicates object distance with different beeping frequencies.6.Detection range: people ，vehicles，garage doors， pillars， posts， walls， fences， barriers， skips， etc.7.Bumper does not need to be removed & No holes need to be drilled.8.No Paint Required! Unlike ultrasonic type sensors.9.2.7 Metres adhesive antenna mounts on inner side of bumper and can be cut to fit any size of bumper.10.Good compatibility:100% Compatible with both conventional and the latest CAN Bus multiplex wiring systems.11.Fits for all vehicles with a plastic bumper including cars， such as fitting for MPV， SUV， ， Vehicles， Motor homes.Specification: Sensor Antenna color: gray Control Module color: blackAlarm Beeper color: blackControl Module size: 5.5cm(L) x 3.1cm(W) x 1.3cm(H) {about 2.2''(L) x 1.2''(W) x 0.5''(H)}Alarm Beeper size :4.5cm(L) x 2.6cm(W) x 1.2cm(H) {about 1.8''(L) x 1.02''(W) x 0.47''(H)}Rated voltage: 12VCurrent : 50mAThree Parts:Sensor Antenna & Control Module & Alarm Beeper Package Included:1 x Sensor Antenna 1 x Control Module 1 x Alarm Beeper 1 x Grommet