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Signalling

A112N Alarm Horn Sounder 2-21-080

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The A112N is a high output 120dB(A) automatically synchronised alarm horn sounder. Globally approved for fire, marine and general signalling applications. Featuring 64 alarm tones and 4 remotely activated stages.
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Voltage
Back box/cable entries
Stopping plug material
Equip. tag/Duty label
Product version
Product option
Enclosure
Part Number:
A112N
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Enquire about
Alarm Horn Sounder

Upgraded Product:

  • Upgrade to current A112N
  • 64 alarm tones
  • 4 remotely activated alarm stages
  • Low in-rush
  • Auto-synchronised output
  • Pluggable, duplicated cable terminals
  • Tropicalised electronics
  • Dual cable entries with stopping plugs
  • Globally approved for fire, marine and general signalling

Description

Low current consumption and high SPL in a outdoor rated enclosure ensure the A112N is suitable for all applications including fire, security and process control. Designed to withstand the harshest of environments. Constructed from lightweight, impact and fire-resistant ABS, the A112N employs the latest in reliable D Class amplifier technology for superior sound output with low current consumption. The A112N is a member of the versatile AlertAlarm family of industrial alarm horn sounders – also available with Xenon, AL112NX or LED beacons, AL112NH. SIL1 & SIL2 Route 2H compliant to IEC61508 (2010) as standard.

Downloads

Datasheet Datasheet.pdf
Installation Manual D221-01-001-IS_Issue_8__A112N_.pdf
UL certificate of compliance UL_CoC_-_20210430-S7995_ALERTALARM.pdf
EC CPR Certificate 2821-CPR-0108_-_A112N_A121.pdf
CSFM Listing CSFM_Listing_2279-0513_A-Series_2025.pdf
UK CPR Certificate 0843-CPR-1006_-_A112N_A121.pdf
UL EU Certificate EN54-3 UL-EU-01153-CPR__A112N_A121_.pdf
Russian EAC Declaration of Conformity D-GB.G05..12595-20-24.03.2025.pdf
Russian Fire certificate EAC_Certificate_043_TR_CU-.00291.pdf
Russian Maritime register 19.00193.278.pdf
MED certificate MEDB000074G-R3.pdf
DNV MED Module D cert MEDD00000GV-R5.pdf
DNV Type Approval TAA00002ZU.pdf
USCG Approval USCG_-_COA_161-002-68-0_A105N__A112N__A121_15-06-2027.pdf
MER certificate MERB000074G.pdf
UAE Civil Defence UAE_Civil_Defence_CoC_ULSZ_UVAV.S7995.pdf
Ingress Protection certificate 58D22760D_IP66_certificate_-_A112N.pdf
Declaration of Conformity DC-083_Issue_A_AlertAlarm.pdf
Declaration of Conformity UKCA DC-085_Issue_A_UKCA_AlertAlarm.pdf
SIL Certificate: Product version [A] T1072-215-2_SIL2_SIL1_2H__D1xS_D1xC_STExS_STExC_GNExS_A112N_AL112N_A121_AL121_MA_.pdf
Declaration of Performance DP_-_2821-CPR-0108-Issue_C_A112N_A121.pdf
2D drawing (PDF) D221-05-001_Issue_A.pdf
2D drawing (DWG) D221-05-001_Issue_A_.DWG
3D drawing (STEP) D221-05-001-3D_Issue_A.STEP
Wiring Schematic DC voltage D221-06-001_Issue_C.pdf
Wiring Schematic AC voltage D221-06-005_Issue_B.pdf

Features

  • 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

Specification

Maximum output: High power level: 120dB(A) @ 1 m ±3dB
[111dB(A) @ 10ft/3m ±3dB]
Default power level: 117dB(A) @ 1 m ±3dB
[108dB(A) @ 10ft/3m ±3dB]
Nominal output: High power level: 118dB(A) @ 1m ±3dB
[109dB(A) @ 10ft/3m] ±3dB
Default power level: 114dB(A) @ 1m ±3dB
[105dB(A) @ 10ft/3m ±3dB]
No. of tones: 64 (UKOOA / PFEER compliant)
No. of stages: 4
Volume control: Full range to 0dB(A)
Effective range: High power level: 214m/702ft @ 1KHz
Default power level: 153m/502ft @ 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
Safety Integrity Level: SIL1 and SIL2 Route 2H IEC61508 (2010)
Ingress protection: IP66 Type 4/4X/13/3R
Enclosure: High impact UL94 V0 & 5VA FR ABS
Terminals: 0.5 – 2.5mm² (20-14 AWG)
Line monitoring: Diode polarized for use in supervised circuits
Operating: -40 to +66°C [-40° to +151°F]
Storage: -40 to +70°C [-40° to +158°F]
Relative humidity: 99%
Vibration test: 35Hz for a duration 4Hr (UL464)
Jarring test: 3ft/lb Energy (UL464)
Impact test: 3x 5lb (UL464)
MTBF DC: 93.92 years / 822,706 hours – MIL 217
MTBF AC: 46.66 years / 408,508 hours – MIL 217
Weight DC: 1.80kg / 3.96lbs
Weight AC: 2.10kg / 4.62lbs

Current Consumption

Product Version: Nominal Voltage: Voltage Range: Default
Power
Level
Current:		 High
Power
Level
Current:
DC024 12Vdc
24Vdc
48Vdc		 11.5-54V dc 280mA
224mA
122mA		 376mA
391mA
223mA
AC230 115Vac 50/60Hz
230Vac 50/60Hz		 100-240Vac 100mA
64mA		 173mA
107mA

Part Codes

Variable: Identifier: Description:
Product type: A112N Alarm horn sounder
Voltage: DC024
AC230		 11.5-54Vdc
100-240Vac 50/60Hz
Back box/cable entries: [e] A Back box with mounting lugs – 2 x M20, 1/2"NPT clearance entries
Stopping plug material: [m] A ABS
Equip. tag/Duty label: [s] 0
1
2		 No equip. tag or Duty label
316 (A4) St/St Equip. tag/Duty label
Metalised Polyester Equip. tag/Duty label
Product version:
[v]		 A UL/cUL, ULC, CPR, MED, DNV, USCG, RMRS, EAC, CE, UKCA – SIL1 & SIL2
Product option:
[o]		 1
Z
X
Y
K		 Standard product
Custom alarm tone software – contact E2S
Custom configuration – contact E2S
Stage control Config. 4
Stage control Config. 5 (DC) and Config. 2 (AC)
Enclosure colour: [x] G
R
S		 Grey
Red
Special colour – contact E2S
Alarm stage control:
Please review the installation manual and wiring schematics for remote stage control and EOL resistor monitoring configuration options:
Config. 1 [DC]: Factory default. Common negative, positive switching. Up to 4 Alarm Stages. EOL monitoring Alarm Stage 1 only
Config. 2 [DC]: User setting. Common positive, negative switching. Up to 4 Alarm Stages. EOL monitoring Alarm Stage 1 only
Config. 3 [DC]: User setting. Common negative, positive switching activation of Alarm Stages 1 & 2 with EOL on both stages. Reverse polarity monitoring
Config. 4 [DC]: Product option ‘Y’. Independent activation of Alarm Stages 1 & 2 with EOL on both stages. Forward polarity monitoring
Config. 5 [DC]: Product option ‘K’. Horn continuously powered. Voltage free activation of up to 3 alarm stages
Config. 1 [AC]: Factory default. Up to 4 Alarm Stages. Stage 1 activated at power on. Stages 2, 3 and 4 via volt free contacts
Config. 2 [AC]: Product option ‘K’. Horn continuously powered. Voltage free activation of up to 3 alarm stages

Approvals

  • UL: UL464
  • cUL: CSA C22.2 No 205-17
  • ULC: CAN/ULC-S525
  • UL EU: (EN54-3) UL-EU-01153-CPR
  • CPR 305/2011: 2821-CPR-0108
  • MED 2023/1667: MEDB000074G
  • MER MSN 1874: MERB000074G
  • DNV GL-CG-0339: TAA00002ZU
  • USCG COA 161-002-68-0
  • EAC CU TR 043/2017: B.00291/21
  • EAC: RU D-GB.GA05.B.12595-20
  • RMRS Marine: No. 19.00193.278
  • SIL1 & SIL2 compliant to IEC61508 (2010)
  • CE, UKCA

Tone Table

Stage 1 WAV file Frequency Description. Stage 2 Stage 3 Stage 4
T 1 /system/1/assets/files/000/000/405/405/214ccf82a/original/TF037.WAV 1000 Continuous – PFEER Toxic Gas Any T 2 T 44
T 2 /system/1/assets/files/000/000/386/386/ceb4e488c/original/TF009.WAV 1200/500 @ 1Hz Sweeping – DIN / PFEER P.T.A.P. Any T 3 T 44
T 3 /system/1/assets/files/000/000/412/412/fa8b418f9/original/TF045.WAV 1000 @ 0.5Hz (1s on, 1s off) Intermittent – PFEER Gen. Alarm Any T 2 T 44
T 4 /system/1/assets/files/000/000/383/383/11797b764/original/TF019.WAV 1.4KH-1.6KHz 1s, 1.6KHz-1.4KHz 0.5s – NF C 48-265 Any T 24 T 1
T 5 /system/1/assets/files/000/000/382/382/2c2978b6a/original/TF017.WAV 544(100mS)/440 (400mS) – NF S 32-001 Any T 19 T 1
T 6 /system/1/assets/files/000/000/947/947/8f040484a/original/TF053.wav 1500/500 – (0.5s on , 0.5s off) x3 + 1s gap – AS4428 Any T 44 T 1
T 7 /system/1/assets/files/000/000/944/944/890010fd0/original/TF054.wav 500-1500Hz Sweeping 2 sec on 1 sec off – AS4428 Any T 44 T 1
T 8 /system/1/assets/files/000/000/417/417/abf396de0/original/TF003.WAV 500/1200Hz @ 0.26Hz(3.3s on, 0.5s off) – NEN 2575 Any T 24 T 35
T 9 /system/1/assets/files/000/000/953/953/5deedc543/original/TF055.wav 1000 (1s on, 1s off)x7 + (7s on, 1s off) – IMO Code 1a Any T 34 T 1
T 10 /system/1/assets/files/000/000/952/952/3a041fde3/original/TF056.wav 1000 (1s on, 1s off)x7 + (7s on, 1s off) – IMO Code 1a Any T 34 T 1
T 11 /system/1/assets/files/000/000/946/946/761de34c6/original/TF057.wav 420(0.5s on, 0.5s off)x3 + 1s gap – ISO 8201 Temporal Any T 1 T 8
T 12 /system/1/assets/files/000/000/945/945/689d9405a/original/TF058.wav 1000(0.5s on, 0.5s off)x3 + 1s gap – ISO 8201 Temporal Any T 1 T 8
T 13 /system/1/assets/files/000/000/950/950/2d337d14e/original/TF059.wav 422/775 – (0.85 on, 0.5 off) x3 + 1s gap – NFPA Temporal Any T 1 T 8
T 14 /system/1/assets/files/000/000/399/399/84b54dafb/original/TF034.WAV 1000/2000 @ 1Hz – Singapore Any T 3 T 35
T 15 /system/1/assets/files/000/000/393/393/744c6f53f/original/TF030.WAV 300 Continuous Any T 24 T 35
T 16 /system/1/assets/files/000/000/391/391/5f7a58b54/original/TF028.WAV 440 Continuous Any T 24 T 35
T 17 /system/1/assets/files/000/000/948/948/c697b364a/original/TF060.wav 470 Continuous Any T 24 T 35
T 18 /system/1/assets/files/000/000/949/949/7e429e658/original/TF061.wav 500 Continuous – IMO code 2 (Low) Any T 24 T 35
T 19 /system/1/assets/files/000/000/390/390/10abe0caa/original/TF027.WAV 554 Continuous Any T 24 T 35
T 20 /system/1/assets/files/000/000/384/384/5c30f9f4d/original/TF020.WAV 660 Continuous Any T 24 T 35
T 21 /system/1/assets/files/000/000/380/380/06feaa7b3/original/TF015.WAV 800 Continuous – IMO code 2 (High) Any T 24 T 35
T 22 /system/1/assets/files/000/000/406/406/49b88184e/original/TF043.WAV 1200 Continuous Any T 24 T 35
T 23 /system/1/assets/files/000/000/407/407/ecce63f4f/original/TF038.WAV 2000 Continuous Any T 3 T 35
T 24 /system/1/assets/files/000/000/421/421/b578af8a9/original/TF005.WAV 2400 Continuous Any T 20 T 35
T 25 /system/1/assets/files/000/000/951/951/d9ce2b2c6/original/TF062.wav 440 @ 0.83Hz (0.60s on, 0.60s off) Intermittent Any T 44 T 8
T 26 /system/1/assets/files/000/000/954/954/b703d99f1/original/TF063.wav 470 @ 0.9Hz (0.55s on, 0.55s off) Intermittent Any T 44 T 8
T 27 /system/1/assets/files/000/000/955/955/0f602886a/original/TF064.wav 470 @ 5Hz (0.10s on, 0.10s off) Intermittent Any T 44 T 8
T 28 /system/1/assets/files/000/000/956/956/dbb5f64db/original/TF065.wav 544 @ 1.14Hz (0.43s on, 0.44s off) Intermittent Any T 24 T 8
T 29 /system/1/assets/files/000/000/957/957/7bd3d8c1c/original/TF066.wav 655 @ 0.875Hz (0.57s on, 0.57s off) Intermittent Any T 44 T 8
T 30 /system/1/assets/files/000/000/397/397/d6d84d0c3/original/TF018.WAV 660 @ 0.28Hz (1.80s on, 1.80s off) Intermittent Any T 24 T 8
T 31 /system/1/assets/files/000/000/381/381/93f51c79a/original/TF016.WAV 660 @ 3.3Hz (0.15s on, 0.15s off) Intermittent Any T 24 T 8
T 32 /system/1/assets/files/000/000/410/410/a0f0ba2a6/original/TF033.WAV 745 @ 1Hz (0.50s on, 0.50s off) Intermittent Any T 24 T 8
T 33 /system/1/assets/files/000/000/379/379/51c1bb5a9/original/TF014.WAV 800 (0.25s on, 1.00s off) Intermittent Any T 24 T 8
T 34 /system/1/assets/files/000/000/388/388/b4cf9203e/original/TF023.WAV 800 @ 2Hz (0.25s on, 0.25s off) – IMO code 3.a (High) Any T 24 T 8
T 35 /system/1/assets/files/000/000/377/377/ac5498db0/original/TF011.WAV 1000 @ 1Hz (0.50s on, 0.50s off) Intermittent Any T 24 T 8
T 36 /system/1/assets/files/000/000/378/378/6380218ec/original/TF013.WAV 2400 @ 1Hz (0.50s on, 0.50s off) Intermittent Any T 24 T 8
T 37 /system/1/assets/files/000/000/958/958/a90e62da4/original/TF067.wav 2900 @ 5Hz (0.10s on, 0.10s off) Intermittent Any T 24 T 8
T 38 /system/1/assets/files/000/000/959/959/f34b52faa/original/TF068.wav 363/518 @ 1Hz (0.50s / 0.50s) Alternating Any T 8 T 19
T 39 /system/1/assets/files/000/000/960/960/368703340/original/TF069.wav 450/500 @ 2Hz (0.25s / 0.25s) Alternating Any T 8 T 19
T 40 /system/1/assets/files/000/000/385/385/a85a0a356/original/TF021.WAV 554/440 @ 1Hz (0.50s / 0.50s) Alternating Any T 24 T 19
T 41 /system/1/assets/files/000/000/961/961/be2680966/original/TF070.wav 554/440 @ 0.65Hz (0.76s / 0.76s) Alternating Any T 8 T 19
T 42 /system/1/assets/files/000/000/962/962/314fe8a1b/original/TF071.wav 561/760 @ 0.83Hz (0.60s / 0.60s) Alternating Any T 8 T 19
T 43 /system/1/assets/files/000/000/963/963/5f6deb8a1/original/TF072.wav 780/600 @ 0.96Hz (0.52s / 0.52s) Alternating Any T 8 T 19
T 44 /system/1/assets/files/000/000/419/419/e353c86c4/original/TF002.WAV 800/1000 @ 2Hz (0.25s / 0.25s) Alternating Any T 24 T 19
T 45 /system/1/assets/files/000/000/419/419/e353c86c4/original/TF002.WAV 970/800 @ 2Hz (0.25s / 0.25s) Alternating Any T 8 T 19
T 46 /system/1/assets/files/000/000/375/375/771bd7a3e/original/TF012.WAV 800/1000 @ 0.875Hz (0.57s / 0.57s) Alternating Any T 24 T 19
T 47 /system/1/assets/files/000/000/374/374/021ee6540/original/TF010.WAV 2400/2900 @ 2Hz (0.25s / 0.25s) Alternating Any T 24 T 19
T 48 /system/1/assets/files/000/000/965/965/e3d76c24c/original/TF073.wav 500/1200 @ 0.3Hz (1.67s / 1.67s) Sweeping Any T 24 T 12
T 49 /system/1/assets/files/000/000/964/964/4e1cd3f7f/original/TF074.wav 560/1055 @ 0.18Hz (2.73s / 2.73s) Sweeping Any T 24 T 12
T 50 /system/1/assets/files/000/000/966/966/a8e5f4440/original/TF075.wav 560/1055 @ 3.3Hz (0.15s / 0.15s) Sweeping Any T 24 T 12
T 51 /system/1/assets/files/000/000/969/969/5734194b1/original/TF076.wav 600/1250 @ 0.125Hz (4s / 4s) Sweeping Any T 24 T 12
T 52 /system/1/assets/files/000/000/394/394/1bfee2f1b/original/TF031.WAV 660/1200 @ 1Hz (0.50s / 0.50s) Sweeping Any T 24 T 12
T 53 /system/1/assets/files/000/000/420/420/50f9ee7a7/original/TF004.WAV 800/1000 @ 1Hz (0.50s / 0.50s) Sweeping Any T 24 T 12
T 54 /system/1/assets/files/000/000/392/392/68d5d1294/original/TF029.WAV 800/1000 @ 7Hz (0.07s / 0.07s) Sweeping Any T 24 T 12
T 55 /system/1/assets/files/000/000/389/389/68683d240/original/TF024.WAV 800/1000 @ 50Hz (0.01s / 0.01s) Sweeping Any T 24 T 12
T 56 /system/1/assets/files/000/000/422/422/42b72dd93/original/TF006.WAV 2400/2900 @ 7Hz (0.07s / 0.07s) Sweeping Any T 24 T 12
T 57 /system/1/assets/files/000/000/373/373/a686b0abe/original/TF007.WAV 2400/2900 @ 1Hz (0.50s / 0.50s) Sweeping Any T 24 T 12
T 58 /system/1/assets/files/000/000/398/398/7c1bf5e00/original/TF025.WAV 2400/2900 @ 50Hz (0.01s / 0.01s) Sweeping Any T 24 T 12
T 59 /system/1/assets/files/000/000/967/967/2e92dbc46/original/TF077.wav 2500/3000 @ 2Hz (0.25s / 0.25s) Sweeping Any T 24 T 12
T 60 /system/1/assets/files/000/000/968/968/5dfcb9aea/original/TF078.wav 2500/3000 @ 7.7Hz (0.65s / 0.65s) Sweeping Any T 24 T 12
T 61 /system/1/assets/files/000/000/408/408/e0fadcdd2/original/TF042.WAV 800Hz Motor Siren Any T 24 T 12
T 62 /system/1/assets/files/000/000/404/404/1c1741943/original/TF041.WAV 1200Hz Motor Siren Any T 24 T 12
T 63 /system/1/assets/files/000/000/409/409/590aa5e82/original/TF044.WAV 2400Hz Motor Siren Any T 24 T 12
T 64 /system/1/assets/files/000/000/395/395/631e82dc8/original/TF026.WAV Simulated Bell Any T 21 T 12
For Stage 2 any Stage 1 alarm tone sound can be selected.
Country specific or custom tone configurations and alarm frequencies are available upon request.

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