Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!purdue!ames!ncar!noao!arizona!swituc!root
From: root@swituc.UUCP (Admin)
Newsgroups: sci.electronics
Subject: Re: How can I fool the motion sensors connected to our lights?
Summary: infrared?
Message-ID: <163@swituc.UUCP>
Date: 17 Jul 89 18:24:26 GMT
References: <1110.AA1110@americ>
Distribution: na
Lines: 10

> >I have just started work somewhere where the lights are controlled by a system
> >of motion sensors-if nothing moves in a pre-determined amount of time
> >the lights go off. I find this system most annoying as I am often

If the motion sensor is an infrared detector, which it probably is, try
using a 755-type timer IC firing an IR LED once every few minutes, seconds, etc.
You can pick up all the parts at Radio Shack for under $10. including
a small enclosure and battery to power it with.

I leave it up to the reader to design the (trivial) circuitry.