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A121 Alarm Horn Sounder 2-21-090

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The A121 is a very high output 124dB(A) automatically synchronised alarm horn sounder. Globally approved for fire, marine and general signalling applications. Featuring 64 alarm tone frequencies and 4 remotely activated stages/channels.
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Voltage
Back box/cable entries
Stopping plug material
Equip. tag/Duty label
Product version
Product option
Enclosure
Part Number:
A121
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Alarm Horn Sounder

Upgraded Product:

  • Upgrade to current A121
  • 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 A121 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 A121 employs the latest in reliable D Class amplifier technology for superior sound output with low current consumption. The A121 is a member of the versatile AlertAlarm family of industrial alarm horn sounders – also available with Xenon, AL121X or LED beacons, AL121H.

Downloads

Datasheet Datasheet.pdf
Installation Manual D221-01-051-IS_Issue_1.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.pdf
DNV MED Module D cert MEDD00000GV-revision3.pdf
DNV Type Approval TAA00002ZU.pdf
Ingress Protection certificate 58D22760E_IP66_certificate_-_A121.pdf
Declaration of Conformity DC-083_Issue_A_AlertAlarm.pdf
Declaration of Conformity UKCA DC-085_Issue_A_UKCA_AlertAlarm.pdf
Declaration of Performance DP-2821-CPR-0108-Issue_B_A112N_A121.pdf
2D drawing (PDF) D221-05-051_Issue_A.pdf
2D drawing (DWG) D221-05-051_Issue_A.DWG
3D drawing (STEP) D221-05-051-3D_Issue_A.STEP
Wiring Schematic DC voltage D221-06-001_Issue_A.pdf
Wiring Schematic AC voltage D221-06-005_Issue_A.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: 124dB(A) @ 1 m ±3dB
[115dB(A) @ 10ft/3m ±3dB]
Default power level: 121dB(A) @ 1 m ±3dB
[112dB(A) @ 10ft/3m ±3dB]
Nominal output: High power level: 121dB(A) @ 1m ±3dB
[112dB(A) @ 10ft/3m] ±3dB
Default power level: 118dB(A) @ 1m ±3dB
[109dB(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: 323m/1062ft @ 1KHz
Default power level: 221m/726ft @ 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
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: 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)
MTBF DC: 93.92 years / 822,706 hours – MIL 217
MTBF AC: 46.66 years / 408,508 hours – MIL 217
Weight DC: 2.10kg / 4.62lbs
Weight AC: 2.70kg / 5.94lbs

Current Consumption

Product Version: Nominal Voltage: Voltage Range: Default
Power
Level
Current:
High
Power
Level
Current:
DC024 12dc
24Vdc
48Vdc
11.5-54Vdc 376mA
430mA
223mA
440mA
930mA
453mA
AC230 115Vac 50/60Hz
230Vac 50/60Hz
100-240Vac 173mA
105mA
340mA
212mA

Part Codes

Variable: Identifier: Description:
Product type: A121 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, RMRS, EAC, CE, UKCA
Product option:
[o]
1
X
Z
Standard product
Custom configuration – contact E2S
Custom alarm tone software – contact E2S
Enclosure: [x] R
G
Red (RAL 3000)
Grey (RAL7038)

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 2020/1170: MEDB000074G
  • DNV GL-CG-0339: TAA00002ZU
  • EAC CU TR 043/2017: B.00291/21
  • EAC: RU D-GB.GA05.B.12595-20
  • RMRS Marine: No. 19.00193.278
  • 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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