Intrinsically Safe Explosion Proof Alarm Horn Sounder Tomar BExS110 Series

SKU: BExS110

Tomar Electronics flameproof BExS110 alarm sounders are suitable for Zone 1, 2, 21 & 22 applications. Approved to IECEx, ATEX, Ex EAC, and INMETRO standards.


ATEX Rating


Hazardous Area Rating



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Intrinsically Safe Explosion Proof Alarm Horn Sounder Tomar BExS110 Series


• Marine grade, corrosion proof, LM6 aluminum enclosure
• Ingress protection IP66/67
• Stainless steel fixings
• Dual M20 cable entries – adaptors available.
• Stopping plug included.
• Reverse polarity diode fitted.
• Automatic synchronization on multi-sounder system.
• Very large termination area.
• Ratchet adjustable stainless steel ‘U’

Introducing Intrinsically Safe Explosion Proof Alarm Horn Sounder Tomar BExS110 Series

Sound level outputs of up to 117dB (A) at 1 meter with a choice of 32 alarm tones and 3 remotely selectable stages. The BEx range features enclosures manufactured from corrosion proof, marine grade copper-free LM6 aluminum with chromate, and powder coat finish. Available in MED approved and SIL2 compliant versions. For fire applications, the BExS110D 24V dc siren is CPD EN89/106/EECcompliant (EN54-3 tested).


Maximum output
117dB (A) @ 1 meter [108dB (A) @ 10ft/3m]
Nominal output
110dB (A) @ 1m +/- 3dB - Tone 2 [101dB (A) @ 10ft/3m]
No. of tones
32 (UKOOA / PFEER compliant)
No. of stages
Volume control
Max. 110dB (A); Min. 72dB (A) - Tone 2
Effective range
100m @ 1 KHz
Voltages DC
12vdc; 24vdc; 48vdc
Voltages AC
115vac; 230vac
Stage switching
Negative or positive
Ingress protection
Enclosure material
Marine-grade copper free LM6 Aluminum
Enclosure finish
Chromate & powder coated finish - anti-corrosion
RAL3000 Red
BExS110 horn
High impact UL94 V0 & 5VA FR ABS (Red)
Cable entries
Dual M20 ISO (one stopping plug incl.)
0.5 - 2.5mm² (20-14 AWG)
Enclosure volume
<2 liters
Line monitoring
Blocking diode included EOL Min. 500 Ohm 2w, or 3k3 Ohm 0.5w resistor
or diode (DC versions) can be fitted
Grounding stud
Temperature range
-50° to +70°C (-58°F to +158°F)
Relative humidity
90% at 20°C [68°F]
WeightDC: 3.00kg AC: 3.20kg



• IECEx KEM 10.0003X
• IEC 60079-0 : 2011
• IEC 60079-1 : 2007-4
• IEC 60079-31 : 2013
• EN 60079-0 : 2012 + A11
• EN 60079-1 : 2007
• EN 60079-31 : 2014
• TR-CU Ex EAC certificate: RU C-GB.AA71.B.00109
• VdS certificate: G206011
• CPD certificate: 0786-CPD-20225
• Safety-integrity level: SIL1 (Standard)
• Safety-integrity level: SIL2 (Optional)
• Inmetro certificate: 10-IEx-0009
• Marine Equipment Directive (MED) Certificate: MEDB00001BU


• II 2G Ex d IIB T4 Ta -50°C to +70°C
• II 2G Ex d 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

45 alarm tones – any tone can be assigned to any stage
User-configurable continuous frequency tone

*SPL data +/-3dB (A). Measured at optimum


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