Designed for 1280 volt DC vehicles and automatically adapts to the vehicle voltage, this backup alarm is suitable for trucks, cars, and SUVs. Key features Automatic voltage adaptation: Works across 1280V DC, enabling compatibility with a wide range of vehicles without additional adapters. materials: Built from materials to ensure durability and a long service life, capable of withstanding various temperature environments. visibility audible alert: Emits a powerful buzzer at 112 dB (±3 dB) when reversing, providing a clear warning that is difficult to ignore. Easy installation: Simple wiring process. Connect the positive wire from the screw terminal to the reversing light power cord or the reversing switch on the dashboard, then connect the ground (negative). Why you need it Improves reversing safety by delivering a loud, unmistakable warning to pedestrians and nearby drivers. Compatible with a wide range of vehicles (1280V DC) without the need for voltage converters. Durable design suited for diverse climate conditions and longterm use. Applications and use scenarios Fleet delivery vehicles: Backing into loading docks or tight loading bays where pedestrians and other traffic are present. Trailers and RVs: Reversing in driveways, campsites, or restricted spaces where a strong audible signal aids visibility. vehicles: SUVs and cars in crowded parking lots or urban garages where clear rearward warning reduces the risk of collisions. Installation guidance (summary) Connect the positive wire from the screw terminal to the reversing light power cord or the reversing switch on the dashboard. Connect the ground (negative) to the vehicle ground.