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CU1 5 or 10 Joule explosion proof Beacon/Sounder Combination Unit

This range of beacon/sounder units, intended for use in potentially explosive gas atmospheres, has a power rating of up to 10 watts (sounder) and 10
joules (beacon) and is suitable for use in the harsh environmental conditions found offshore and onshore in the oil, gas and petrochemical industries.

The flamepaths, flare and body are manufactured from a UV stable glass reinforced polyester. Stainless steel screws and mounting stirrup are incorporated to ensure a corrosion-free product.

Product Certificates
ATEX Ex de IIB Gb (896 KB) (PDF)
Inmetro Exde IIB T4 Gb (500 KB) (PDF)
IP66 Certificate (42 KB) (PDF)
IP67 Certificate (15 KB) (PDF)
CCOE (555 KB) (PDF)
TR EAEU 037 (388 KB) (PDF)
Product Certificates – External Link
IECEx Ex de IIB T4 Gb
Schematics / Wiring
Exde Schematic (81 KB) (PDF)
Wiring (AC 297-182) (62 KB) (PDF)
Wiring (DC 297-188) (69 KB) (PDF)
Technical Manuals
Exde (TM207) (1 MB) (PDF)
INMETRO (TM335) Iss. A (625 KB) (PDF)
Certification ATEX, IECEx, Inmetro, ABS, CCC 
Flameproof Ex II 2G Ex de IIB T4 Gb
Area Classification Zone 1, Zone 2 & non-Ex use.
Certified Ambient Temperature -50°C to +70°C*
Ingress Protection IP66 & 67
Material Corrosion-free GRP
Entries Up to 2 x 25mm
Weight 6.5kg approx
Options Body & lens colour, tel. initiate, earth continuity,
flash rate, voltages 24V–48V d.c. 110V–254V a.c.

 * Model dependant


  • Zone 1, Zone 2 & non-Ex use.
  • Exde IIB T4.
  • ATEX approved, Ex II 2 G.
  • IECEx certified, Gb.
  • BASEEFA certified.
  • Brazilian (Inmetro) certified.
  • CCC
  • IP66 and IP67.
  • Certified temperature: –50°C to +70°C*.
  • Up to 116 dB(A)*.
  • Version with independent beacon/sounder operation now available.
  • 27 Tones, user selectable (dual tone option - d.c. voltage).
  • Tones comply with UK00A/PFEER guidelines
  • Integral volume control
  • GRP corrosion-free flamepath.
  • Ratcheted swivel mouting stirrup.
  • Stainless steel fixtures.
  • Tapered flamepath.

*Model dependent.