Superior Signals, Inc.'s 5700 Series rotating beacons are available with amber, blue, clear, or red polycarbonate lenses and are ideal for fleet, municipal, and construction vehicles. They can be permanently installed or are available with a vacuum magnetic mount so that they can be quickly switched to another vehicle. The rotating beacons have a 55-watt halogen rotator with a flash rate of 90 fpm, and it measures 7.83 in. in diameter by 5.4 in. in height. The vacuum magnetic mounted units have a polycarbonate base with foam mounting gasket, a lighted rocker switch that plugs into a vehicle's power outlet, a two-year warranty, and conform to SAE J845 Class 1 requirements.