Bullet Points: 1Reversingradar:Thisnon-displaycar buzzerreversingradar sysisdesignedforpurebuzzer,anti falsealarm,highsensitivity,stableandclearsound. 2ExcellentPerformance:Anti-freeze,waterproof,shockproof,durable.Thebeepwillbecomeloudersothateverythingaroundthemovingvehiclecanbedetectedintime. 3UltrasonicSensors:Ourparkingsensorisequippedwith4sensorsofdifferentcolors,andtheadvancedchipsetcanachieveaccuratedetectionandcoverage with detection distance of 30-150cm. 4HighSecurity:High-qualitywirelesssensorsystem,protectivecircuitsavoidingoverheatingoroverloading.Reversingradarhelpsavoiddangerousandcostlycollisionsbehindthewheels. 5Easy to install: Perfectly fit your car with universal hole saw (vehicles with 24V are not included) . With a drill head, convenient to drill hole on the bumper of the car. Buzzerreversingradar:Thisnon-displaybuzzerreversingradarisdesignedforpurebuzzer,anti-falsealarm,highsensitivity,stableandclearsound,andiscompatiblewiththeoriginalcarseries.Thisistheidealchoiceforyourtravel. ExcellentPerformance:Anti-freeze,waterproof,shockproof,durable.Thebeepwillbecomelouderandloudersothateverythingaroundthemovingvehiclecanbedetectedintimeandhelppreventcollisions. 4UltrasonicSensors:Ourparkingsensorisequippedwith4sensorsofdifferentcolors,andtheadvancedchipsetcanachieveaccuratedetectionandcoverage.Thesensorwillbeepin3modesaccordingtotheobstacledistance(30-150CM). Name: car parking sensor Size: 3.4*2.4*0.8in Voltage: 12V Detection range: 12-60in packing list: 1 x Sound Alert Indicator 1 x Command Module 4 x Parking Sensor 1 x Power Supply Cable 1 x Hole Saw 1 x Instruction Manual