[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 mainly used for car, excavators, construction machinery, vehicles parking and other large vehicles reminder Specifications: Material: Nylon Color: Black Voltage: DC 12V-80V Caliber: Approx.70 mm / 2.76" Rated Current: 300mA Power Output: 15W Volume: 105DB Package Weight: Approx. 353g Package Included: 1 x Universal Car Backup Alarm