A105NSONTEL Telephone Initiated Alarm Sounder

  • Continuously rated.
  • Stainless steel fixings.
  • Unit can be mounted using external lugs or internal BESA compatible fixing positions.
  • Tropicalisation available on request.


  • GOST-R approved. Cert: POCC GB-JB05-H00144
A105NSONTEL Telephone Initiated Alarm Sounder
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A105NSONTEL Telephone Initiated Alarm Sounder

The A105NSONTEL is a compact, high output, 105dB(A) telephone initiated alarm sounder.

The line powered A105NSONTEL has a choice of three alarm tone frequencies.


Nominal output: 105dB(A) @ 1m +/- 3dB [96dB(A) @ 10ft/3m]
No. of tones: 3
Volume control: Max. 105dB(A); Min. 96dB(A)
Effective range: 60m/197ft @ 1KHz
Supply: Direct power from telephone line (REN 1)
Ingress protection: IP66
Housing material: High impact UL94 V0 & 5VA FR ABS
Colour: Red (RAL3000), grey (RAL7038) & white.
Cable entries: 3 x M20 clearance gland knockouts in side & back
Terminals: 0.5 to 2.5mm² 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: 0.75kg/1.65Ibs

Part Codes

[x] = Housing colour: G: Grey R: Red W: White


Tone 1 Siren Tone
Tone 2 Alternating tone
Tone 3 Sweeping tone