SKU: A112N

E2S A112N Alarm Horn Sounder

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The E2S A112N is a high output 120dB(A) automatically synchronised alarm horn sounder. Due to the low current consumption, high SPL and an outdoor rated enclosure, the E2S A112N is suitable for all applications including fire, security and process control. The A112N is constructed from lightweight, impact and fire resistant ABS, and is designed to withstand the harshest of environments.

The E2S A112N features 64 alarm tone frequencies and 4 remotely activated stages/channels.

The A112N is a member of the versatile AlertAlarm family of industrial alarm horn sounders – also available with Xenon, AL112NX or LED beacons, AL112NH.

Automatic synchronisation
Continuously rated
Dual M20 or 1/2″NPT clearance cable entries
Duplicate pluggable cable terminations – Class A
Ingress protection IP66 Type 4/4X/13/3R
Conformal coated (tropicalised) electronics
64 alarm tone frequencies and 4 remotely activated alarm stages
Available with custom tone configurations and frequencies
Diode polarized for use in supervised circuits

Additional information


100-240Vac, 11.5-54Vdc

Back box/Cable Entries

Lugs and 2 x entries

Stopping Plug Material


Equipment Tag/Duty Label

316 (A4) St/St Equip. tag/Duty label, Metalised Polyester Equip. tag/Duty label, No equip. tag or Duty label

Product Version


Product Option

Custom Alarm Tone Configuration, Standard

Enclosure Color

Grey RAL7038, Red RAL3000

Maximum output:

Default power level: 117dB(A) @ 1 m ±3dB [108dB(A) @ 10ft/3m ±3dB], High power level: 120dB(A) @ 1 m ±3dB [111dB(A) @ 10ft/3m ±3dB]

Nominal output:

Default power level: 114dB(A) @ 1m ±3dB [105dB(A) @ 10ft/3m ±3dB], High power level: 118dB(A) @ 1m ±3dB [109dB(A) @ 10ft/3m] ±3dB

No. of tones

64 (UKOOA / PFEER compliant)

No. of stages


Volume control

Full range to 0dB(A)

Effective range

Default power level: 153m/502ft @ 1KHz, High power level: 214m/702ft @ 1KHz

Voltages DC

11.5-54V dc

Voltages AC

100-240V ac 50/60Hz

In rush

815mA within 4.0ms @ 24Vdc

Stage switching

Negative, positive, voltage free

IP Rating

IP66 Type 4/4X/13/3R


High impact UL94 V0 & 5VA FR ABS


0.5 – 2.5mm² (20-14 AWG)

Line monitoring

Diode polarized for use in supervised circuits

Temperature Range

-40 to +66°C [-40° to +151°F]

Storage Temperature Range

-40 to +70°C [-40° to +158°F]

Relative Humidity

95% at 20°C [68°F]

Vibration test

35Hz for a duration 4Hr (UL464)

Jarring test

3ft/lb Energy (UL464)

Impact test

3x 5lb (UL464)


93.92 years / 822,706 hours – MIL 217


46.66 years / 408,508 hours – MIL 217

Weight DC

1.80kg / 3.96lbs

Weight AC

2.10kg / 4.62lbs


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