These Flashing Red Beacons are designed for structure lighting. The optical system consists of four red Fresnel lenses, designed to provide a definite 360 horizontal beam. The two lamp receptacles are mounted to properly position two (2) 620 or 700 Watt Mogul pre-focus beacon lamps, thus providing correct beam distribution. A three-terminal connecting block is mounted in the base allowing each lamp to be individually fed and monitored, if desired.Beacons are furnished with a five-foot length of #12-3 conductor Seoprene cable which enters the base through a 1"watertight connector. Conduit may be used by removing the watertight connector and disconnecting the cable. The Flashing Red Beacon must be used in conjunction with a beacon flasher or tower lighting control in order to achieve the proper flash rate. Additional delivery time may be required.