Brand N/A Model U301 Quantity 1 piece(s) Function Improves parking safety detection in all directions without dead angle CPU N/A Detecting Distance 0.3~3.0 meters Sensor Diameter 220 cm Monitor Type N/A Working Voltage 12V Rated Current 50 mA Ultrasonic Frequency 40 KHz Alarm Volume 65 dB Working Temperature 20~70 centigrade Other Features Indicates object distance with different beeping frequencies the sensor antenna activates 3 types of acoustic signals during approaching an obstacle at different distances; A continuous sound of Beep approximately between 0-0.3m; A short interval sound of Beep approximately between 0.3-0.5m; A long interval sound of Beep approximately between 0.5-0.7m; Simple and concealed installation; The sensor antenna is entirely installed inside the bumper without any drilling work.; Fit for any car truck RV or mini-van. Peel & Stick Antenna foil tape Packing List 1 x Sensor antenna (220cm) 1 x Alarm beeper (240cm / 145cm) 1 x Control module (50cm) 2 x Adhesive tape 2 x Cable ties 1 x English user manual 1 x Button-hole