Test the Loudenlow using your computer speakers
TURN YOUR COMPUTER SPEAKERS' VOLUME UP HIGH
1. 
Hear Loudenlow Model 1000 (Middle C) or
2. 
Hear Loudenlow Model 520
Don't have computer speakers? Call our free 800 number to hear a pre-recorded sample of the Loudenlow Middle C over your phone. Call 1-800-525-6101814. (Recording only.)
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If you like we will mail you
at no charge an audio CD with samples
of the Loudenlow sound. You can play the CD in your home stereo.
This may help you to determine if the Loudenlow
will work for you.
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The Loudenlow Original makes a lower frequency tone which is much easier for many people to hear.
The pitch is around Middle C (250Hz) and carries throughout a house better.
The Loudenlow Model 520 generates a 520 Hz Square Wave signal via a T-3 pattern --
this has been shown effective for waking hard of hearing people by the latest expert
research.
Read what some customers have said.
Fully battery powered. 6 "AA"s generate over 1,000 milliamps
Dear Abby calls for better smoke alarm.
Our products are intuitive, easy to use and don't require special wiring or installation.
Typical, store-bought smoke alarms use a tiny, high pitched speaker which is difficult for many people to hear. Our smoke alarms make a loud, deep tone.