|The visual warning signaling device shall be Tomar model 500P or approved equal. The light source shall be a plug-in field replaceable single-flash xenon strobe tube. The strobe light 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 be 8 watts and generate 6 joules per flash. Voltage shall be multiple input of 12-28VDC. Strobe light shall be designed to accept a dome guard, 180 degree lens blackout, and straight or coiled cigar plug.