|The visual signaling beacon shall be Tomar model 550P or approved equal. The light source shall be a plug-in field replaceable single-flash xenon strobe lamp. The warning beacon shall have a Lexan® lens and universal mount base. The warning signal must have built-in RFI filters to protect against radio interference and spike voltages. It shall be polarity protected, and have a power supply fully potted in polyurethane. The power supply output shall be11 watts and generate 12 joules per flash. Voltage shall be multiple input of 12-74VDC. Strobe light shall be designed to accept a dome guard, 180 degree lens blackout, and straight or coiled cigar plug. The warning beacon shall be UL component recognized for use on type E, EE, and ES electrical industrial trucks covered by UL standard # 583.