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Author Topic: Back-up battery life  (Read 5475 times)

howard

  • Newbie
  • Helpful Post Rating: 0
  • Posts: 4
Back-up battery life
« on: July 21, 2004, 11:02:06 PM »

  I want a longer than a 20 hours battery
life on back-up, (20 hours - but only if the
alarm does not activate). Idea's ? Multiple
9 volt's in parralel?  Any idea how long a
300 watt UPS might last? How about a 12
volt  battery instead of 9 volt ---with a
diode maybe?  ALSO, if the alarm triggers
and say the thief leaves the back door open,
will the alarm reset and protect by itself?
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