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AL121H Alarm Horn Sounder & LED Beacon 2-31-240

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The AL121H is a very high output 124dB(A) alarm horn sounder combined with a high output LED beacon. 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
Lens colour
Part Number:
AL121H
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Enquire about
Alarm Horn Sounder & LED Beacon

Upgraded Product:

  • Upgrade to current AL121H
  • Array of high output 18 x Cree© SMT White LED
  • 64 alarm tones
  • 4 remotely activated alarm stages
  • Low in-rush
  • Auto-synchronised horn and beacon
  • Pluggable, duplicated cable terminals
  • Dual cable entries with stopping plugs
  • Globally approved for fire and general signalling

Description

Low current consumption and high SPL in a outdoor rated enclosure ensure the AL121H is suitable for all applications including fire, security and process control. Designed to withstand the harshest of environments. The AL121H employs the latest in reliable D Class amplifier technology for superior sound output with low current consumption. The alarm horn sounder & LED beacon may be connected from a single or separate supplies for simultaneous or independent operation. SIL1 & SIL2 Route 2H compliant to IEC61508 (2010) as standard.

Downloads

Datasheet Datasheet.pdf
Installation Manual D221-01-351-IS_Issue_8__AL121H_.pdf
UL certificate of compliance UL_CoC_-_20210430-S7995_ALERTALARM.pdf
Russian EAC Declaration of Conformity D-GB.G05..12595-20-24.03.2025.pdf
CSFM Listing CSFM_Listing_2279-0513_A-Series_2025.pdf
Russian Fire certificate EAC_Certificate_043_TR_CU-.00291.pdf
Russian Maritime register 19.00193.278.pdf
UAE Civil Defence UAE_Civil_Defence_CoC_ULSZ_UVAV.S7995.pdf
Declaration of Conformity DC-084_Issue_A_AlertAlight.pdf
Declaration of Conformity UKCA DC-086_Issue_A_UKCA_AlertAlight.pdf
SIL Certificate: Product version [A] T1072-215-2_SIL2_SIL1_2H__D1xS_D1xC_STExS_STExC_GNExS_A112N_AL112N_A121_AL121_MA_.pdf
2D drawing (PDF) D221-05-251_Issue_A.pdf
2D drawing (DWG) D221-05-251_Issue_A.DWG
3D drawing (STEP) D221-05-251-3D_Issue_A.STEP
Wiring Schematic DC voltage D221-06-251_Issue_B.pdf
Wiring Schematic AC voltage D221-06-255_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
  • 64 alarm tone frequencies
  • 4 remotely activated alarm stages/channels
  • Available with custom tone configurations and frequencies
  • Diode polarized for use in supervised circuits

Specification

Alarm Horn:
Maximum output: High power level: 124dB(A) @ 1m ±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
In rush: 815mA within 4.0ms @ 24Vdc
Stage switching: Negative (common positive)
L.E.D Beacon:
Light source: High intensity L.E.D. array.
18 x Cree© SMT White LED
High Power Steady: 180 cd – measured ref. to I.E.S.
1Hz Flash cd: 113 cd – measured ref. to I.E.S.
LED life: 60,000 hours
Settings: 1. High Power Steady
2. Blinking – 425ms ON 75ms OFF
3. 1.0Hz (60 fpm) – 200ms ON 800ms OFF
4. 1.33Hz (80fpm) – 150ms ON 600ms OFF
5. Double Flash
6. Triple Flash
7. 2.0Hz (120fpm) – 125ms ON 375ms OFF
8. Temporal Pattern Flash
General:
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/PC
Lens colour filter: Field replaceable UV stable PC
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/UL1638)
Jarring test: 3ft/lb Energy (UL464/UL1638)
Impact test: 3x 5lb (UL464/UL1638)
MTBF DC: 66.52 years / 582,750 hours – MIL 217
MTBF AC: 36.35 years / 318,420 hours – MIL 217
Weight DC: 2.30kg / 5.06Ibs
Weight AC: 2.90kg / 6.39Ibs

Current Consumption

Product Version: Nominal Voltage: Voltage Range: Beacon Current: Horn
Default Power Level
Current:		 Horn
High Power Level
Current:
DC024 12Vdc 11.5-14Vdc 79.5mA 376mA 440mA
DC024 24Vdc 16-33Vdc
(Regulated)		 87mA 430mA 930mA
DC048 48Vdc 48-54Vdc 60mA 233mA 453mA
AC230 115Vac
230Vac		 100-240 Vac 50/60Hz 34mA
19mA		 173mA
340mA		 105mA
212mA

Part Codes

Variable: Identifier: Description:
Product type: AL121H Combined alarm horn sounder & LED beacon
Voltage: DC024
DC048
AC230		 12Vdc (11.5-14Vdc)/24Vdc (20-28Vdc)
48Vdc (48-54Vdc)
100-240 Vac 50/60Hz
Back box/cable entries: [e] A Back box with mounting lugs – 2 x M20, 1/2"NPT clearance
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, RMRS, EAC, CE, UKCA – SIL1 & SIL2
Product option:
[o]		 1
Z
X
Y		 Standard product
Custom alarm tone software – contact E2S
Custom configuration – contact E2S
Stage control Config. 4 or 8
Enclosure colour: [x] G
R
S		 Grey
Red
Special colour – contact E2S
Lens colour: [y] A
B
C
G
M
R
Y		 Amber
Blue
Clear
Green
Magenta
Red
Yellow
Alarm stage control:
Please review the installation manual and wiring schematics for remote stage control and EOL resistor monitoring configuration options:
Config. 1 or 5 [DC]: Factory default. Common negative, positive switching. Up to 4 Alarm Stages. EOL monitoring Alarm Stage 1 only
Config. 2 or 6 [DC]: User setting. Common positive, negative switching. Up to 4 Alarm Stages. EOL monitoring Alarm Stage 1 only
Config. 3 or 7 [DC]: User setting. Common negative, positive switching activation of Alarm Stages 1 & 2 with EOL on both stages. Reverse polarity monitoring
Config. 4 or 8 [DC]: Product option ‘Y’. Independent activation of Alarm Stages 1 & 2 with EOL on both stages. Forward polarity monitoring
Config. 1 or 2 [AC]: Factory default. Up to 4 Alarm Stages. Stage 1 activated at power on. Stages 2, 3 and 4 via volt free contacts

Approvals

  • UL: UL464, UL464A, UL1638, UL1638A
  • cUL: CSA C22.2 No 205-17
  • ULC: CAN/ULC-S525 & CAN/ULC-S526
  • 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 1000 Continuous – PFEER Toxic Gas Any T 2 T 44
T 2 1200/500 @ 1Hz Sweeping – DIN / PFEER P.T.A.P. Any T 3 T 44
T 3 1000 @ 0.5Hz (1s on, 1s off) Intermittent – PFEER Gen. Alarm Any T 2 T 44
T 4 1.4KH-1.6KHz 1s, 1.6KHz-1.4KHz 0.5s – NF C 48-265 Any T 24 T 1
T 5 544(100mS)/440 (400mS) – NF S 32-001 Any T 19 T 1
T 6 1500/500 – (0.5s on , 0.5s off) x3 + 1s gap – AS4428 Any T 44 T 1
T 7 500-1500Hz Sweeping 2 sec on 1 sec off – AS4428 Any T 44 T 1
T 8 500/1200Hz @ 0.26Hz(3.3s on, 0.5s off) – NEN 2575 Any T 24 T 35
T 9 1000 (1s on, 1s off)x7 + (7s on, 1s off) – IMO Code 1a Any T 34 T 1
T 10 1000 (1s on, 1s off)x7 + (7s on, 1s off) – IMO Code 1a Any T 34 T 1
T 11 420(0.5s on, 0.5s off)x3 + 1s gap – ISO 8201 Temporal Any T 1 T 8
T 12 1000(0.5s on, 0.5s off)x3 + 1s gap – ISO 8201 Temporal Any T 1 T 8
T 13 422/775 – (0.85 on, 0.5 off) x3 + 1s gap – NFPA Temporal Any T 1 T 8
T 14 1000/2000 @ 1Hz – Singapore Any T 3 T 35
T 15 300 Continuous Any T 24 T 35
T 16 440 Continuous Any T 24 T 35
T 17 470 Continuous Any T 24 T 35
T 18 500 Continuous – IMO code 2 (Low) Any T 24 T 35
T 19 554 Continuous Any T 24 T 35
T 20 660 Continuous Any T 24 T 35
T 21 800 Continuous – IMO code 2 (High) Any T 24 T 35
T 22 1200 Continuous Any T 24 T 35
T 23 2000 Continuous Any T 3 T 35
T 24 2400 Continuous Any T 20 T 35
T 25 440 @ 0.83Hz (0.60s on, 0.60s off) Intermittent Any T 44 T 8
T 26 470 @ 0.9Hz (0.55s on, 0.55s off) Intermittent Any T 44 T 8
T 27 470 @ 5Hz (0.10s on, 0.10s off) Intermittent Any T 44 T 8
T 28 544 @ 1.14Hz (0.43s on, 0.44s off) Intermittent Any T 24 T 8
T 29 655 @ 0.875Hz (0.57s on, 0.57s off) Intermittent Any T 44 T 8
T 30 660 @ 0.28Hz (1.80s on, 1.80s off) Intermittent Any T 24 T 8
T 31 660 @ 3.3Hz (0.15s on, 0.15s off) Intermittent Any T 24 T 8
T 32 745 @ 1Hz (0.50s on, 0.50s off) Intermittent Any T 24 T 8
T 33 800 (0.25s on, 1.00s off) Intermittent Any T 24 T 8
T 34 800 @ 2Hz (0.25s on, 0.25s off) – IMO code 3.a (High) Any T 24 T 8
T 35 1000 @ 1Hz (0.50s on, 0.50s off) Intermittent Any T 24 T 8
T 36 2400 @ 1Hz (0.50s on, 0.50s off) Intermittent Any T 24 T 8
T 37 2900 @ 5Hz (0.10s on, 0.10s off) Intermittent Any T 24 T 8
T 38 363/518 @ 1Hz (0.50s / 0.50s) Alternating Any T 8 T 19
T 39 450/500 @ 2Hz (0.25s / 0.25s) Alternating Any T 8 T 19
T 40 554/440 @ 1Hz (0.50s / 0.50s) Alternating Any T 24 T 19
T 41 554/440 @ 0.65Hz (0.76s / 0.76s) Alternating Any T 8 T 19
T 42 561/760 @ 0.83Hz (0.60s / 0.60s) Alternating Any T 8 T 19
T 43 780/600 @ 0.96Hz (0.52s / 0.52s) Alternating Any T 8 T 19
T 44 800/1000 @ 2Hz (0.25s / 0.25s) Alternating Any T 24 T 19
T 45 970/800 @ 2Hz (0.25s / 0.25s) Alternating Any T 8 T 19
T 46 800/1000 @ 0.875Hz (0.57s / 0.57s) Alternating Any T 24 T 19
T 47 2400/2900 @ 2Hz (0.25s / 0.25s) Alternating Any T 24 T 19
T 48 500/1200 @ 0.3Hz (1.67s / 1.67s) Sweeping Any T 24 T 12
T 49 560/1055 @ 0.18Hz (2.73s / 2.73s) Sweeping Any T 24 T 12
T 50 560/1055 @ 3.3Hz (0.15s / 0.15s) Sweeping Any T 24 T 12
T 51 600/1250 @ 0.125Hz (4s / 4s) Sweeping Any T 24 T 12
T 52 660/1200 @ 1Hz (0.50s / 0.50s) Sweeping Any T 24 T 12
T 53 800/1000 @ 1Hz (0.50s / 0.50s) Sweeping Any T 24 T 12
T 54 800/1000 @ 7Hz (0.07s / 0.07s) Sweeping Any T 24 T 12
T 55 800/1000 @ 50Hz (0.01s / 0.01s) Sweeping Any T 24 T 12
T 56 2400/2900 @ 7Hz (0.07s / 0.07s) Sweeping Any T 24 T 12
T 57 2400/2900 @ 1Hz (0.50s / 0.50s) Sweeping Any T 24 T 12
T 58 2400/2900 @ 50Hz (0.01s / 0.01s) Sweeping Any T 24 T 12
T 59 2500/3000 @ 2Hz (0.25s / 0.25s) Sweeping Any T 24 T 12
T 60 2500/3000 @ 7.7Hz (0.65s / 0.65s) Sweeping Any T 24 T 12
T 61 800Hz Motor Siren Any T 24 T 12
T 62 1200Hz Motor Siren Any T 24 T 12
T 63 2400Hz Motor Siren Any T 24 T 12
T 64 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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