Sirens

Sirens, sometimes known as a sounder, are used to attract interest and to present warning, particularly where an immediate response is needed. The sound has to be surely audible and identifiable to the human in the meant signalling area, and these are regularly used to complement a visible sign. Audible signalling is mainly useful in conditions in which sight maybe a problem, like in a bright sunlight or for the visually impaired. To alert a person, it is recommended that a sounder or siren reaches at between 5 and 15 dB(A) louder than the background noise of the given area. Frequency should also be between 300 and 3000 Hz.

Things to consider when selecting a siren:
• The sound pressure level achieved, quoted as decibel or dB(A).
• The frequency quoted in Hz.
• The distance it must be audible over.
• The background noise of the area it will be installed in.
• The sounds any machinery in the area makes to ensure the tone of the sounder or siren does not sound similar.
• The duration of each use - quick bursts or prolonged use.
To enable easy comparison, the dB(A) stated for a sounder or siren is usually measured at a distance of 1m. When the distance is doubled the dB(A) to drop by 6. This is why it is important to know not only the dB(A) the sounder or siren is capable of, but also the distance away from the intended signalling area it will be placed.
It is also worth noting that louder is always best. It is strongly recommended that the sounder or siren is sized to be within 5 to 15 dB(A) above the ambient noise level. Whilst the recommendation is that we aim for a level between 5 and 15 dB(A) above ambient, studies have found that it is possible to distinguish a sound that is up to 10 dB below ambient as long as there is sufficient frequency differential.
We offer a range of sirens which can be used in business departments such as Fire, Industrial, Emergency and Warning Systems.

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Viewing 1 - 18 of 18 products
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Description Price Current Type Decibels at 1 Metre Supply Voltage Decibel Range Temperature Range Body Colour Series Special Features
RS Stock No. 422-315
Mfr. Part No.SLA-0002
BrandKlaxon
£141.39
Each
Units
AC 120dB 230 V ac Maximum of 120 dB -30 to +45 °C Red/Black - -
RS Stock No. 249-564
Mfr. Part No.SLE-0004
BrandKlaxon
£60.82
Each
Units
AC 100dB 110 V ac, 230 V ac Maximum of 100 dB -30 → +55 °C Grey - -
RS Stock No. 422-321
Mfr. Part No.SLB-0002
BrandKlaxon
£235.65
Each
Units
AC, DC 127dB 230 V ac/dc Maximum of 127 dB -30 → +45 °C Grey/Black - -
RS Stock No. 622-1310
Mfr. Part No.KPEG1600
BrandKingstate
£13.60
Each
Units
DC 105dB 6 → 16 V dc Maximum of 105 dB -20 → +60 °C Black - -
RS Stock No. 907-6343
Mfr. Part No.SLD-0002
BrandKlaxon
£132.45
Each
Units
AC 127dB 230 V ac - -30 → +45 °C Yellow Super M -
RS Stock No. 249-520
Mfr. Part No.SLE-0002
BrandKlaxon
£56.25
Each
Units
DC 103dB 24 V dc Maximum of 103 dB -30 → +55 °C Grey - -
RS Stock No. 289-2003
Mfr. Part No.SLC-0002
BrandKlaxon
£378.56
Each
Units
AC, DC 125dB 230 V ac/dc Maximum of 125 dB -30 → +45 °C Grey - -
RS Stock No. 530-5906
Mfr. Part No.SQ/W/C/S
BrandFulleon
£28.16
Each
Units
DC 93dB 10 → 28 V dc 75 → 100 dB -10 → +55 °C White Squashni -
RS Stock No. 124-8921
Mfr. Part No.8WD4420-0EA
BrandSiemens
£54.17
Each
Units
DC - 24 V dc Maximum of 108 dB -20 → +50 °C Black SIRIUS Advanced Design, Improved Illumination, Thermoplast Enclosure
RS Stock No. 530-6000
Mfr. Part No.SQ/R/C/S
BrandFulleon
£28.16
Each
Units
DC 93dB 10 → 28 V dc 75 → 100 dB -10 → +55 °C Red Squashni -
RS Stock No. 907-6337
Mfr. Part No.SLA-0001
BrandKlaxon
£146.00
Each
Units
AC 120dB 110 V ac - -30 → +45 °C Red/Black Mono 72 Rugged Construction for Use in All Environments, Weatherproof to IP65
RS Stock No. 814-0503
Mfr. Part No.XVS14BMW
£149.80
Each
Units
DC 105dB 12 → 24 V dc Maximum of 105 dB -30 → +50 °C White Harmony XVS -
RS Stock No. 772-0802
Mfr. Part No.A131AC230G1
Brande2s
£1,455.69
Each
Units
AC 131dB 90 → 264 V ac - -20 → +55 °C Grey - -
RS Stock No. 814-0529
Mfr. Part No.XVS14MMW
£95.06
Each
Units
AC 105dB 120 → 230 V ac Maximum of 105 dB -30 → +50 °C White - -
RS Stock No. 814-0522
Mfr. Part No.XVS10GMW
£122.98
Each
Units
AC 106dB 120 V ac Maximum of 106 dB -30 → +50 °C White - -
RS Stock No. 907-6334
Mfr. Part No.SLD-0001
BrandKlaxon
£146.00
Each
Units
AC 127dB 110 V ac - -30 → +45 °C Yellow Super M -
RS Stock No. 814-0525
Mfr. Part No.XVS14GMW
£244.73
Each
Units
AC 105dB 120 V ac Maximum of 105 dB -30 → +50 °C White - -
RS Stock No. 2550317159
Mfr. Part No.2700138
£69.69
Each
Units
- - - - - - - -
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