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  Eaton's Crouse-Hinds series MEDC DB4B Loudspeaker range is designed for use in potentially explosive gas and dust atmospheres. Suitable for marine and both onshore and offshore environments in the oil, gas and petrochemical industries. A high-power, explosion proof loudspeaker, the DB4B was introduced as a replacement for the DB4 with improved intelligibility and acoustic performance. Certified for use in a wide range of temperatures (from -55°C to +85°C)* the Ex enclosure is manufactured from GRP with a rugged thermoplastic flare ensuring corrosion resistance The frequency response of the unit ensures that critical voice messages and general alarm tones are highly intelligible. The specific SPL figure for sensitivity is 1W @ 1m is 110dB whilst at 1m the 25W unit produces 124dB, the 15W unit 122dB and the 8W unit 119dB. This unit is available in a high number of configurations to suit your specification. Please download the datasheet for customization options.