Ex db IIC T4/T5/T6 Gb
    Ex tb IIIC T4/T5/T6 Db
  • Certified temperature: –60°C to +85°C
  • IP66 & IP67 (terminal only)
  • Up to 116 dB output @ 1 m
  • Integral volume control
  • 28 tones, user selectable
  • 3 stage unit remotely switchable
  • Tones can be programmed to customer’s specification
  • DC supply voltage between 12 V and 48 V
  • End of line resistor option
  • Sounder & beacon combination units available, for further details contact MEDC
  • Ex enclosure – marine grade alloy or stainless steel
  • Flare – high impact thermoplastic polyester
  • Stainless steel mounting bracket and cover screws
  • Mounting bracket has ratchet facility as standard
  • Swivel bracket standard on Stainless steel unit, optional on Alloy units
Request for quote


The DB3BM is a high power explosion proof sounder, introduced as a replacement for the current DB1 / DB1H with improved functionality and performance. Certified for use in a wide range of temperatures from -60°C to +85°C the Ex enclosure is manufactured in either marine grade alloy or stainless steel with a rugged thermoplastic flare providing a corrosion free and aesthetically pleasing product.