Another Project - Alarm System

By technogeek-1995 ·
I am building a single room alarm and I need 2 contact censors, a buzzer, and the main station with a switch or pass code. NO MONITORING SERVICES!!! I need to know...
1 Where to get it (Radio Shack???)
2 how to wire it so that the when the connection breaks, the alarm sounds
3 the best wiring "route" or way

THANKS in advance...

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All Answers

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I need it cheaper and...

by technogeek-1995 In reply to here is an idea

I needed it cheaper (Home made) and in the US. Thanks

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Plan B

by Jacky Howe In reply to I need it cheaper and...

This is a noisy one.

You could use the 12 volt battery that was suggested for your fireworks

12 volt car battery

1 pressure switch (like in car doors that turn the interior light on)

1 12 volt car horn

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This may be of use

by Bizzo In reply to Another Project - Alarm S ...

Here's alink with numerous alarm circuits that you may find useful.

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Is there

by technogeek-1995 In reply to This may be of use

Is there anything else???

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