JA224B – Multi-tone buzzer for up to 9 different warning tones

Tone output prioritized or mixed, control inputs electrically isolated, multi-level adjustment of output volume, download of the tones into the buzzer from memory card, test output, SSAS2 approval

Multi-tone buzzer JA224B Signalling of up to 9 different warning tones

Multisystem locomotives are now used for cross-border services throughout Europe.

One problem of their interoperability is the integration of different country specific train protection systems with their respective warning tones. It means that the driver’s cab of a multisystem loco must be equipped with up to 9 different buzzers for cross-border service..

The solution is an all-in-one device: the Schaltbau buzzer JA224B .


  • One device replacing up to 9 different buzzers
  • All inputs optically isolated against each other and against supply voltage
  • Two modes of operation:
    • All 9 tones prioritized
    • Combination: 3 tones prioritized, 6 tones mixed
  • 16 volume settings
  • Download of customized tones from memory card
  • Test output (all 9 tones, volume-reduced)

Stock items

JA224B Electronic buzzers for 9 tones/voices max.
JA224B-24 Version SSAS2  U n = 24 V DC
JA224B-36 Version SSAS2  U n = 36 V DC
JA224B-24-MW same as above with mounting brackets
JA224B-36-MW same as above with mounting brackets


Multi-tone buzzer JA224B
Sound level, distance 1m80 ... 100 db(A)
Pitch9 different tones
Nominal voltage24 V DC, 36 V DC, (110 V DC upon request)
Nominal current500 mA @ 24 V DC
Ingress protection rating, IEC 60529IP20
Temperature range-25 °C ... +60 °C
StandardsEN 50121-3-2, EN 50128, EN 50155
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Related Downloads

Catalogue F210
JA222, JA224B, JA226B - Electronic buzzers for automatic train control systems
/en/products/electrics-for-rolling-stock/thank-you-kopie/JA224B – Multi-tone buzzer for up to 9 different warning tonesElectrics for rolling stock

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