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Loud Bell/Ringer for Mobile/Cell Phone

Discussion in 'Audio' started by johnc83, Mar 6, 2018.

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  1. johnc83


    Jan 23, 2015
    Hi, we have a noisy factory area where we need to reach people by phone and we need a loud ringer so the people can hear it ringing.

    I am aware of loud external ringers but they only seem available for fixed LandLine telephones. I need one for a mobile phone. If possible I'd like a simple loud bell rather than speakers. Could anyone advise if it is possible to get something like this?
  2. Tha fios agaibh

    Tha fios agaibh

    Aug 11, 2014
    There's one called ringmaster on the market.
    Or, you could design and build your own.
  3. Bluejets


    Oct 5, 2014
    Most mobiles have a buzzer/motor vibrator.
    One on my Iphone is difficult to ignore.
  4. andrea chiu

    andrea chiu

    Mar 13, 2018
    I think you try this Algo 8180 SIP Audio Alerters. It works great as an external ringer.
  5. FuZZ1L0G1C


    Mar 25, 2014
    I don't know if the Ringmaster or Algo 8180 have this design, but my idea is to have a small mike mounted in a cellphone cradle, with input sensitivity control, to avoid ambient sounds triggering it.
    The relatively loud mobile ring (rectified audio) would trigger an alarm circuit via thyristor gate.
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