From an article that I wrote:
Here is the way that I have found. It is
really pretty simple. No problem and thank
you for emailing me. I was always
wondering if the alarm really armed when I
pressed the button on the remote from the
porch. I couldn't hear the chime because I
was too far away, and there was no other
way to tell. One day after a vacation I
came home and found at that my alarm had
been disarmed all of our vacation. Thank
goodness nothing was stolen. I knew that
something had to be done. So I looked
around on the net and found nothing, do I
constructed something myself.
What you need are:
(1) POWERFLASH Burglar Alarm Interface
(PF284)
(1) LED Detector Probe from
http://www.smarthome.com/8013.htmlIt is really simple to put together, all
you do is trim the edges of the LED
Detector Probe until it is small enough to
not cover up any of the leds around the
armed led. Then you stick the detector
probe on the Armed LED. Be sure that it
sticks good and there is no light coming in
from around the edges. Then you take the
end of the probe cord and connect it to a
powerflash unit.