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SONF1-HO High Output Alarm Horn Sounder 2-21-020

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The SONF1-HO is a compact, high output, 105dB(A) alarm sounder. Low current consumption and high SPL in a robust fire retardant housing ensures suitability for all general signalling applications including fire, security and process control.
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High Output Alarm Horn Sounder

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Sonora range offers compact audio visual signaling for fire, industrial, process control and machine safety applications. The range features low current consumption combined with high performance. The SONF1-HO features a maximum output of 105dB(A) at 1 metre with a current consumption of just 80mA. CPR compliant, tested to EN54-3 ad VdS approved.


Datasheet Datasheet.pdf
Installation Manual SONF1_HO_Inst__ISN0603-B_.pdf
VdS certificate VdS_G205054_SON_2019-06-10.pdf
EC Certificate of Conformity 0786-CPD-20191_SONF1__SONF1_HO.pdf
Russian EAC Declaration of Conformity D-GB.GA05.B.12595-20-24.03.2025.pdf
Russian Maritime register 19.00193.278.pdf
Ingress Protection certificate 58D22760A_IP66_certificate_-_SONF1.pdf
Declaration of Conformity DC-024_Issue_D_Sonora.pdf
Declaration of Conformity DC-024_Issue_G_Sonora.pdf
Declaration of Performance DP_-_0786-CPD-20191-Issue_A_SONF1__SONF1-HO.pdf
2D drawing (PDF) SK0265_Issue_A.pdf
3D drawing (STEP) back box type S SK0265-S-3D_Issue_A.STEP
3D drawing (STEP) back box type A SK0265-A-3D_Issue_A.STEP
3D drawing (STEP) back box type M SK0265-M-3D_Issue_A.STEP
Hi-res product image 3 (TIFF) 2-21-020_SONF1-H-G.tif
Hi-res product image 2 (TIFF) 2-21-020_SONF1-H-W.tif
Hi-res product image 1 (TIFF) 2-21-020_SONF1-H-R.tif
Lo-res product image 1 (JPG) 2-21-020_SONF1-H-R.jpg
Lo-res product image 2 (JPG) 2-21-020_SONF1-H-W.jpg
Lo-res product image 3 (JPG) 2-21-020_SONF1-H-G.jpg


  • Automatic synchronisation on multi-sounder system.
  • Continuously rated.
  • Stainless steel fixings.
  • Mounting via internal BESA compatible fixing positions (standard version) 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
Voltages DC: 12V dc; 24V dc
[Reverse polarity diode protection]
Ingress protection: IP66
Housing material: High impact UL94 V0 & 5VA FR ABS
Colour: Red (RAL3000), grey (RAL7038) & white.
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 tempe: -40 to +70°C [-40° to +158°F]
Relative humidity: 90% at 20°C [68°F]
Weight: 0.30kg/0.66Ibs

Current Consumption

Version: Voltage: Current:
12V dc 10-18V dc 50mA
24V dc 18-30V dc 80mA

Part Codes

Version: Part code:
12V dc SONF1DC12[b][x]-H
24V dc SONF1DC24[b][x]-H
[b] = Back box type: No identifier: Sonora type – 3 x side & 1 x rear 20mm knockouts
A: A100 type with lugs – 2 x side & 1 x rear 20mm knockouts
M: Multi type with lugs – 1 x side 20mm entry with stopping plug
[x] = Enclosure colour: G: Grey (RAL7038)
R: Red (RAL3000)
W: White


  • VdS approved to EN54-3 (CPD 89/106/EEC).
  • UKOOA/PFEER compliant alarm tones.
  • GOST-R approved. Cert: POCC GB.JB05.H00144.

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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