Hazardous Area Products // Audible & Visual Warning Signals // Combination Units // MEDC DB3 / SM87HXB Sounder Beacon Combination Unit

MEDC DB3 / SM87HXB Sounder Beacon Combination Unit


Exd(e), Heavy Duty Industrial & Marine, Weatherproof

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Beacon / Sounder – Combination Units

This range of audio/visual combination units may be assembled from MEDC’s range of beacons and sounders. Mounted on a sturdy, drilled, painted, stainless steel plate, the units are pre-wired as standard such that a single input operates both the sounder and beacon simultaneously.

Units are available for use in potentially explosive atmospheres and dedicated units are now available for use in industrial and marine environments.


  • *Zones 1, 2 and safe area use.
  • *ATEX approved Ex II 2GD.
  • *IECEx certified Gb, Db.
  • *UL listed Class I, Div. 1 & 2, Groups C & D.
  • IP66 and 67.
  • *Certified temperature: –55ºC to +70ºC.
  • Corrosion free GRP beacon/sounder.
  • Beacon available as xenon, filament, fluorescent or LED.
  • Xenon: up to 21J.
  • Filament: up to 100W.
  • Fluorescent: up to 39W.
  • LED: up to 192cd.
  • Sounder: up to 115dBA output at 1 metre.
  • All stainless steel (316), epoxy painted back plate.
    *Model dependent.
Technical Specification
CertificationATEX: Ex II 2G Exd IIC T4/T5.
IECEx: Exd IIC T4/T5.
UL: Class I, Div. 2, Groups C & D.
Area ClassificationZone 1 and Zone 2 use.
Voltage24V d.c., 48V d.c., 240V a.c.
BeaconLM25 or stainless steel.
SounderCorrosion-free GRP.
BeaconStandard: SM87 (Xenon 5J).
Option: Filament (10W). Flourescent (≤10W). LED (≤192cd)
SounderStandard: DB3 (long flare) ≤ 115dB(A) at 1 metre.
Option: DB3 (short flare) ≤ 108dB(A) at 1 metre
(Note: Close coupled unit only available ATEX certifified).
Dimensions (mm)420 (height) x 220 (width) x 337 (depth).
OptionsRefer to data sheet. Specify when ordering.

MEDC DB3 / SM87HXB Sounder Beacon Combination Unit Datasheet