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USB modules

Subject: USB modules
From: "Christopher Glaeser" <nospam@xxxxxxxxxx>
Date: Wed, 21 Oct 2009 15:49:34 -0700
Newsgroups: alt.security.alarms

Can you recommend any USB modules for a) monitoring contact switches (e.g.
NO/NC contacts in a PIR), and b) controlling relay switches (e.g. turn on an
IR source and security camera)?

Best,
Christopher

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