Signalling lights are a category of industrial safety and signaling devices rather than a specific brand. These products are manufactured by various companies globally, such as Werma Signaltechnik (Germany), Patlite Corporation (Japan), and Federal Signal Corporation (USA). They serve industries like manufacturing, automation, transportation, and emergency services. Key products include LED beacon lights, strobe lights, and audible alarms, used for visual or audible alerts in hazardous or high-noise environments. Companies like Grainger and Radwell distribute these products as part of their industrial safety equipment offerings.