Two Tones For Door Bell

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01:50:36

When door bell rings which door are they at?  Loud and and soft ring of same door bell tells you the difference.  

Right side switch has choke coil of #28 single cotton covered wire wrapped around an empty thread spool.  Wrap 150 to 200 turns or so to give lower volume tone you desire and series connect to door bell switch.

published 9 years ago

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