This is a simple - easy to build - cellphone controlled switch. A five second call - from anywhere in the World - will toggle the switch On and Off.
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Cellphone Operated Toggle Switch
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This is a photograph of the
Cellphone Operated Toggle Switch
. A simple five second call - from anywhere in the world - will energize or de-energize the relay. And since the call is never actually answered - it will probably be free.
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DynamicDrive.Com
Circuit Description
Ron's Circuits
Write To Ron
More Free Circuits
Construction Guide
