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This range of Ceiling-Mounted loudspeakers, intended for use in potentially explosive atmospheres, has a power rating of up to 8 Watts (upon request) and is suitable for use in the harsh environmental conditions found offshore and onshore in the oil, gas and petrochemical industries.

The lightweight, patented design provides self-supporting and self-locking mounting onto a ceiling tile from 0.5 to 55mm thick. The speaker is held in the mount via a twist-fit support and locking grille, giving access from above or below and allowing first fit of either ceiling or speakers. The DB20C’s compact design will fit a ceiling cavity of limited space and its aesthetically pleasing appearance will enhance the surroundings.

Data Sheets
DB20C (746 KB) (PDF)
Product Certificates
DB20C Exde IIC (1 MB) (PDF)
CUTR (1013 KB) (PDF)
Inmetro (808 KB) (PDF)
AXIS (70 KB) (PDF)
DNV (195 KB) (PDF)
Product Certificates – External Link
Schematics / Wiring
DB20C Wiring (45 KB) (PDF)
DB20C Schematic (104 KB) (PDF)
Technical Manuals
DB20C (TM208 ATEX) (2 MB) (PDF)
Certification ATEX, IECEx, CUTR, Inmetro, DNV
Flameproof & Increased Safety ATEX Ex II 2 G, Exde IIB T3/T4
          Ex II 2 GD Exde IIC T4/T5
Area Classification Zone 1, Zone 2 & non Ex-use
Certified Ambient Temperature –50°C to +70°C*
Ingress Protection IP66 & IP67
Material Body and Cover:Corrosion-free GRP
Outer Flare: UV stable ABS
Output 100dBA at 1W at 1 metre
106dBA at 4W at 1 metre
Entries 2 x M2O ISO + 1 x certified plug
Weight 1.5kg (approx)

4 x 4.0mm2 as standard

8 x 2.5mm2 optional ATEX and IECEx only.

Transformer Tappings @ 4W 4, 2, 1, 0.75, 0.38, 0.2
Options Tag & Transformer voltage

 *Model Dependent


  • Zone 1& 2 and Zone 21 & 22 use
  • IIC Gas Group and Dust approved
  • BASEEFA certified
  • CUTR certified
  • Brazilian (Inmetro) certified
  • IECEx Approved
  • DNV certified
  • IP66 & IP67
  • Certified temperature –50°C to +70°C*
  • GRP and Flame-Retardant ABS corrosionfree construction
  • 100dB (A) at 1 watt at 1 metre
  • Power tappings via integral transformer
  • Tool-free mounting method
  • 100V or 70V line versions available
  • Earth continuity available
  • Option for 8 terminals to allow loop-in loop-out wiring configuration

*Temperature class relates to ambient temperature
(see over)