BExS110 Explosion Proof Alarm Horn Sounder 

The flameproof BExS110 alarm sounders are suitable for Zone 1, 2, 21 & 22 applications. Approved to IECEx, ATEX, Ex EAC and INMETRO standards. Available as SIL 1 and SIL 2 compliant.

Sound level outputs of up to 117dB(A) at 1 metre with a choice of 32 alarm tones and 3 remotely selectable stages. The BEx explosion proof Ex d range features enclosures manufactured from corrosion proof, marine grade copper free LM6 aluminium with chromate and powder coat finish. SIL1 & SIL2 Route 2H compliant to IEC61508 (2010) as standard, with optional diagnostic module for Route 1H SIL2 compliance. For fire applications the BExS110D 24V dc siren is MED compliant and CPD EN89/106/EEC compliant (EN54-3 tested).

Product code: BEXS110D


Main features and benefits:

  • Marine grade, corrosion proof, LM6 aluminium enclosure.
  • Ingress protection IP66/67
  • Stainless steel fixings
  • Dual M20 cable entries – adaptors available.
  • Stopping plug included.
  • Reverse polarity diode fitted.
  • Automatic synchronisation on multi-sounder system.
  • Very large termination area.
  • Ratchet adjustable stainless steel ‘U’ bracket.
  • ‘Stage Programmable’ version available with 45 tones & 4 remotely selectable stages.


  • IECEx Certificate: KEM 10.0003X
  • ATEX Certificate: KEMA 99ATEX6312X
  • TR-CU Ex EAC certificate: RU C-GB.HA65.B.01252_21
  • VdS certificate: G206011
  • UKCA certificate: UL22UKEX2638X
  • CPD certificate: 0786-CPD-20225
  • SIL1 & SIL2 compliant to IEC61508 (2010)
  • INMETRO certificate: 10-IEx-0009
  • Marine Equipment Directive (MED) Certificate: MEDB00001BU


  • II 2G Ex db IIB T4 Ta -50°C to +70°C
  • II 2G Ex db IIC T4 Ta -50°C to +55°C
  • II 2D Ex tb IIIC T100°C Db Ta -50°C to +55°C
  • II 2D Ex tb IIIC T115°C Db Ta -50°C to +70°C

Click on the links below to download the following attachments:

Marine Fire Detection Catalog (page40-47) .pdf

BEXS110D Data Sheet.pdf