The DB3B is a high power explosion proof horn, introduced as a replacement for the current DB3 with improved functionality and performance. Certified for use in a wide range of temperatures from -67°F to +185°F the Ex enclosure is manufactured from GRP with a rugged thermoplastic flare providing a corrosion free and aesthetically pleasing product. Capable of producing 112dB at 10 feet and with a range of pre-recorded tones, the DB3B includes an integral volume control which is ideal when a lower output is required.