The Signal Source has the signaling industry’s most competitive and extensive line of unique audible and visual signals. If your application is general signaling or your need is warning signals specifically configured and listed for use with fire alarm and suppression supervised control panels and power expanders, The Signal Source will meet your needs. Whether your needs require a Marine rated NEMA 4X UL1971 listed synchronized strobe light or a low current UL1971 listed Class 1 Division 1 Explosion-proof synchronized strobe light, The Signal Source can meet your requirements. Our warehouses are well stocked with listed NEMA 4X Class 1 Division Explosion proof, Class 1 Division 2 hazardous location strobe lights, horns, speakers and pull stations. With over 40 years of application experience in the signaling industry, it's no wonder why The Signal Source has become "Industry's Source for Signaling Solutions" for so many businesses.