By the way, if you like our store,Please add our store to your Favorite Stores,You can get our New arrival and Discount information in timeDescription:100% Brand New High cla quality and very durableThe system turns on automatically when the car engine starts.Beeping alarm prompt step bystep, closer the obstacle, more rapid the alarm sound.Double CPU for rapid response.High quality and easy to install.SpecificationColor: BlackQuantity:1 pcAlarm Diameter:22mm/0.86"Alarm Height:10mm/0.392 Mounting Holes distance:30mm/1.18"2 Wires length:90mm/3.54"Buzzer Type: PiezoelectricSound Preure Level 95 dBRate Voltage: 12V DCOperating Voltage: 3 - 24VMax Current Rating 10mAFrequency 3900500HzDrive Method: Drive Circuit Built in Mounting HolesSound:"Di" ContinuousSpecifications:100% Brand New High cla quality and very durableThe system turns on automatically when the car engine starts.Beeping alarm prompt step bystep, closer the obstacle, more rapid the alarm sound.Double CPU for rapid response.High quality and easy to install.Package Included:1 x 95DB Piezoelectric Buzzer AlarmNotes:Duetothedifferencebetweendifferentmonitors,thepicturesmaynotreflecttheactualcoloroftheitem.Comparethedetailsizeswithyours,pleaseallow1-3cmerror,duetomanualmeasurement.Pleaseleavingameagebeforeyougivethebad