Peterson V771B Emergency Beacon Light Assembly 12V Magnetic

Product Description

The PETERSON V771B is a blue emergency beacon light assembly designed for vehicles and equipment requiring high-visibility warning illumination. Powered at 12 volts, it uses a revolving flash pattern to maximize visibility in emergency, construction, or roadside service applications. The magnetic mount base allows for fast, tool-free attachment to any ferrous metal surface, making it practical for fleets and service vehicles where the light may need to move between units. At 5.5 inches tall and 4.63 inches in diameter, the assembly is compact enough for most cab rooflines while still delivering a conspicuous signal pattern. Installation requires no drilling or permanent hardware, and the unit ships ready to deploy straight from the box.

This beacon is suited for use on service trucks, utility vehicles, tow rigs, and mobile equipment operating in traffic or work-zone environments. The revolving flash type is a common specification for roadside and construction-site visibility requirements. The 12-volt operating voltage matches standard automotive and light-duty truck electrical systems, making it a direct plug-in for most service fleets. It is appropriate for use by HVAC, plumbing, electrical, and pool service contractors who operate vehicles in traffic-exposed or roadway-adjacent environments.

Key Features

• Revolving flash pattern provides continuous 360-degree visibility
• Magnetic mount base allows tool-free installation and removal on ferrous surfaces
• 12-volt operation compatible with standard automotive electrical systems
• Compact form factor at 5.5 inches tall and 4.63 inches in diameter
• Blue lens color for designated emergency or service vehicle applications

Compatibility

Designed as a magnetic-mount 12-volt beacon for standard automotive and light-duty truck electrical systems where a revolving blue emergency beacon is required.

Installation Notes

Place the magnetic base on a clean, flat ferrous metal surface on the vehicle roof or hood before energizing the unit. Route the power cord to a switched 12-volt source and ensure the circuit is rated to handle the beacon load. Disconnect vehicle power before making any wiring connections to the electrical system. Check applicable federal, state, and local regulations regarding authorized use of blue emergency beacon lighting in your jurisdiction before operating on public roads.