Type:InvisibleBrand Name:MorfayerOrigin:Mainland ChinaCertification:None1:Parking Sensors(2:Parking Sensors(3:Parking Sensors(4:Parking Sensors(5:Parking Sensors(6:Parking Sensors(Feature: *100% Brand New and High Quality *Material:Plastic *Automatically beeps to alert near-by objects *Detects people, vehicles, small & high kerbs, garage doors, pillars, posts, walls, fences, barriers, skips, etc *Improves parking safety *Minimize bumper damage *Indicates object distance with different beeping frequencies *Easy and concealed "inside bumper" installation Installation: To safety test the U301,the vehicle's engine MUST BE OFF and the parking brake must be engaged. *Turn the vehicle's ignition key to the ON position,but do not start the engine. *Place the vehicle's transmission in reverse gear. *Stand about 6 feet away from the bumper and slowly approach the vehicle. *At distance from 27.5 to 15.75 inches,you will hear a fast beep.At distance from 15.75 to 8.0 inches, you will hear a continuous beep. *Note:Bumper does not need to be removed.No holes need to be drilled. Frequently Asked Questions: (1)Q:Will the Back-up Sensor prevent me from hitting any object behind my car? A:No.The Back-up Sensor is only a warning device.If you back a car too fast ,or your reaction time is slow,you could still strike an object. (2)Q:Does the weather affect the sensitivity of the Back-up Sensor? A:Yes.Rain can reduce the detection range slightly. Package included: 1 x Electromagnetic Reverse Radar 1 x Alarm Beeper 1 x Sensor Antenna 1 x Set of tool 1 x English Instructions 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.