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SON4L Alarm Sounder & LED Beacon 2-31-030

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The SON4L is a compact, high output, 100dB(A) alarm sounder with integral L.E.D. array beacon.
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Alarm Sounder & LED Beacon


The robust fire retardant housing ensures the SON4L is suitable for all general signalling applications including fire, security and process control.


Datasheet Datasheet.pdf
Installation Manual SON4_LED_Inst_ISN0606-C_.pdf
VdS certificate VdS_G205054_SON4B_SON4L.pdf
EC CPR Certificate 0786-CPD-20190_SON4.pdf
Russian EAC Declaration of Conformity D-GB.GA05.B.12595-20-24.03.2025.pdf
Russian Maritime register 19.00193.278.pdf
Declaration of Conformity DC-024_Issue_G_Sonora.pdf
Declaration of Performance DP_-_0786-CPD-20190-Issue_A_SON4__SON4B__SON4L.pdf
2D drawing (PDF) SK0266_Issue_A.pdf
2D drawing (DWG) SK0266_Issue_A.dwg
Hi-res product image 1 (TIFF) 2-31-030_SON4L-R-R-DC.tif
Hi-res product image 2 (TIFF) 2-31-030_SON4L-G-R-AC.tif
Lo-res product image 1 (JPG) 2-31-030_SON4L-R-R-DC.jpg
Lo-res product image 2 (JPG) 2-31-030_SON4L-G-R-AC.jpg


  • Automatic synchronisation on multi-sounder system.
  • Continuously rated.
  • Stainless steel fixings.
  • Duplicate cable terminations (in & out for daisy-chain installations).
  • Tropicalisation available on request.
  • Available with custom tone configurations and frequencies.


Maximum output: 100dB(A) @ 1 metre [91dB(A) @ 10ft/3m]
Nominal output: 99dB(A) @ 1m +/- 3dB – Tone 1 [90dB(A) @ 10ft/3m]
No. of tones: 10 (UKOOA / PFEER compliant)
No. of stages: 3
Volume control: On board potentiometer
Effective range: 30m/99ft @ 1KHz
Stage switching: Negative
Light source: 5 x high intensity L.E.D. array
Flash rate: 2 Hz
Peak/Effective Intensity cd: 3cd* – measured ref. to I.E.S.
Lens / L.E.D.: Amber & Red
Voltages DC: 12V dc; 24V dc; 48V dc
Voltages AC: 24V ac; 115V ac; 230V ac
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°F]
Weight: DC: 0.30kg/066Ibs AC:0.40kg/0.88Ibs
*SPL data +/-3dB(A). Measured at optimum voltage.
*Candela measurements representative of performance with amber lens at optimum voltage.

Part Codes

Version: Part code:
12V dc SON4LDC12[x]/[y]
24V dc SON4LDC24[x]/[y]
48V dc SON4LDC48[x]/[y]
24V ac SON4LAC24[x]/[y]
115V ac SON4LAC115[x]/[y]
230V ac SON4LAC230[x]/[y]
[x] = Enclosure colour: G: Grey (RAL7038)
R: Red (RAL3000)
W: White
[y] = Lens colour: A: Amber
R: Red


  • VdS approved: EN54-3 (CPD 89/106/EEC).
  • EAC: RU D-GB.GA05.B.12595-20


Version: Voltage: Current:
12V dc +/-25% 50mA
24V dc +/-25% 50mA
48V dc +/-25% 40mA
24V ac 50/60Hz +/-10% 60mA
115V ac 50/60Hz +/-10% 25mA
230V ac 50/60Hz +/-10% 20mA

Tone Table

Stage 1 WAV file Frequency Description. Stg 2 Stg 3
T 1 /system/1/assets/files/000/000/419/419/e353c86c4/original/TF002.WAV 800/1000Hz @ 0.25 sec Alternating T 8 T 5
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 8
T 3 /system/1/assets/files/000/000/386/386/ceb4e488c/original/TF009.WAV 1200/500Hz @ 1Hz – DIN / PFEER P.T.A.P. T 1 T 8
T 4 /system/1/assets/files/000/000/382/382/2c2978b6a/original/TF017.WAV 544Hz (100mS)/440Hz (400mS) – NF S 32-001 554Hz T 2
T 5 /system/1/assets/files/000/000/405/405/214ccf82a/original/TF037.WAV 1000Hz Continuous – PFEER Toxic Gas T 1 T 6
T 6 /system/1/assets/files/000/000/395/395/631e82dc8/original/TF026.WAV Bell T 1 T 8
T 7 /system/1/assets/files/000/000/392/392/68d5d1294/original/TF029.WAV 800/1000Hz @ 7Hz Sweeping T 5 T 1
T 8 /system/1/assets/files/000/000/398/398/7c1bf5e00/original/TF025.WAV 2400/2900Hz @ 50Hz Sweeping T 5 T 1
T 9 /system/1/assets/files/000/000/402/402/9168c8c48/original/TF035.WAV 420Hz @ 0.625 sec Australian Alert T 10 T 5
T 10 /system/1/assets/files/000/000/400/400/aba6c8a51/original/TF036.WAV 500-1200Hz 3.75sec /0.25sec. Australian Evac. T 6 T 5
Country specific or custom tone configurations and alarm frequencies are available upon request.

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