[Loud Sound]: Our backup alarm produces a powerful beeping sound that is 105dB 3dB, which can give a warning when the vehicle is backing up [Easy to Use]: The backup warning alarm works on 12-80 Volt DC vehicles and it will automatically adjust to a voltage range of 12-80 volt vehicles, very convenient and easy to install [High Quality]: Made of nylon material, very sturdy and durable; With universal mounting bracket slotted holes, can be mounted anywhere in your heavy-duty vehicle [Wide Application]: It is mainly used for cars, excavators, construction machinery, vehicle parking, and other large vehicles as a reminder Specifications: Material: Nylon Color: Black Voltage: DC 12V-80V Caliber: Approx. 70 mm / 2.76 in Rated Current: 300mA Power Output: 15W Volume: 105dB Package Weight: Approx. 353g Package Included: 1 x Universal Car Backup Alarm