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SONFL1H-HO High Output Alarm Horn & LED Beacon 2-31-080

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The SONFL1H-HO features the 105dB(A) SONF1-HO alarm sounder combined with the L101H high output L.E.D. beacon. The compact, robust housing is ideal for all general signalling applications including fire, security and process control.
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High Output Alarm Horn & LED Beacon


The array of 24 Superflux type high output L.E.D’s generates over 120 candela of light output and can be user set to either steady of flashing mode. Sounder & beacon may be connected from a single supply for simultaneous operation or from separate supplies for independent operation.


Datasheet Datasheet.pdf
Sounder/horn installation SONF1_HO_Inst__ISN0603-B_.pdf
Beacon/light installation L101H_Inst__D169-00-001-D_.pdf
Russian EAC Declaration of Conformity D-GB.GA05.B.12595-20-24.03.2025.pdf
Russian Fire certificate Russian_Fire_Certificate_-GB.25..01082.PDF
Russian Maritime register 19.00193.278.pdf
Declaration of Conformity DC-057_Issue_G_SONFL1X__SONFL1H.pdf
2D drawing (PDF) SK0142_Issue_B.pdf
2D drawing (DWG) SK0142_Issue_B.dwg
Hi-res product image 1 (TIFF) 2-31-080_SONFL1H-H-G.tif
Lo-res product image 1 (JPG) 2-31-080_SONFL1H-H-G.jpg
Hi-res product image 2 (TIFF) 2-31-080_SONFL1H-H-R.tif
Lo-res product image 2 (JPG) 2-31-080_SONFL1H-H-R.jpg
Hi-res product image 3 (TIFF) 2-31-080_SONFL1H-H-W.tif
Lo-res product image 3 (JPG) 2-31-080_SONFL1H-H-W.jpg


  • High output L.E.D array
  • Automatic synchronisation on multi-sounder system.
  • Continuously rated.
  • Stainless steel fixings.
  • Mounting via internal BESA compatible fixing positions or via external mounting lugs.
  • Duplicate cable terminations (in & out for daisy-chain installations).
  • Tropicalisation available on request.
  • Available with custom tone configurations and frequencies.


Maximum output: 105dB(A) @ 1 metre [96dB(A) @ 10ft/3m]
Nominal output: 103dB(A) @ 1m +/- 3dB – Tone 1 [94dB(A) @ 10ft/3m]
No. of tones: 10 (UKOOA / PFEER compliant)
No. of stages: 2
Effective range: 32m/105ft @ 1KHz
Light source: High intensity L.E.D. array.
24 x Superflux type high ouput L.E.D’s
Options: Steady or 2Hz flash mode (on board selection)
Peak/Effective Intensity cd: Green L.E.D: 176cd – measured ref. to I.E.S.
Terminals: 0.5 to 4.0mm² cables
L.E.D. colours: Amber Blue, Green, Red and White
Lens colour: All L.E.D. colours use a Clear lens to maximise output and to ensure the signal is most effective in high ambient light.
Voltages DC: 12Vdc; 24V dc
Ingress protection: IP66
Housing material: High impact UL94 V0 & 5VA FR ABS
Colour: Red (RAL3000), grey (RAL7038) & white.
Lens material: PC
Cable entries: 4 x M20 clearance gland knockouts in side & back
Terminals: 0.5 to 1.5mm² cables.
Operating temp: -25 to +55°C [-13° to +131°F]
Storage temp: -40 to +70°C [-40° to +158°F]
Relative humidity: 90% at 20°C [68°]
Weight: 0.50kg/1.1Ibs
*SPL data +/-3dB(A). Measured at optimum voltage.
*Candela measurements representative of performance with clear lens at optimum voltage.

Part Codes

Version: Part code:
12V dc SONFL1HDC012[x]/[y]-H
24V dc SONFL1HDC024[x]/[y]-H
[x] = Enclosure colour: G: Grey (RAL7038)
R: Red (RAL3000)
W: White
[y] = Light colour: A: Amber
B: Blue
W: Clear (White)
G: Green
R: Red

Alarm sounder

Version: Voltage: Current :
12V dc 10-18V dc 50mA
24V dc 18-30V dc 80mA
* current at nominal voltage on Tone 2


  • SONF1-HO sounder: VdS approved to EN54-3 (CPD 89/106/EEC)
  • GOST-R approved. Cert: POCC GB-JB05-H00144

L.E.D. Beacon

Version: Voltage: Current:
24V dc 10-30V dc 155mA (@ 24V dc)

Tone Table

Stage 1 WAV file Frequency Description Stage 2
T 1 /system/1/assets/files/000/000/419/419/e353c86c4/original/TF002.WAV 800/1000Hz @ 0.25 sec Alternating T 8
T 2 /system/1/assets/files/000/000/417/417/abf396de0/original/TF003.WAV 500/1200Hz @ 0.3Hz 0.5 sec Slow Whoop T 1
T 3 /system/1/assets/files/000/000/386/386/ceb4e488c/original/TF009.WAV 1200/500Hz @ 1Hz – DIN / PFEER P.T.A.P. T 8
T 4 /system/1/assets/files/000/000/382/382/2c2978b6a/original/TF017.WAV 544Hz (100mS)/440Hz (400mS) – NF S 32-001 T 9
T 5 /system/1/assets/files/000/000/395/395/631e82dc8/original/TF026.WAV Bell T 1
T 6 /system/1/assets/files/000/000/392/392/68d5d1294/original/TF029.WAV 800/1000Hz @ 7Hz Sweeping T 8
T 7 /system/1/assets/files/000/000/400/400/aba6c8a51/original/TF036.WAV 500-1200Hz 3.75sec /0.25sec. Australian Evac. T 10
T 8 /system/1/assets/files/000/000/405/405/214ccf82a/original/TF037.WAV 1000Hz Continuous – PFEER Toxic Gas
T 9 /system/1/assets/files/000/000/390/390/10abe0caa/original/TF027.WAV Continuous 554Hz
T 10 /system/1/assets/files/000/000/402/402/9168c8c48/original/TF035.WAV 420Hz @ 0.625 sec Australian Alert

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