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Message: <blockquote data-quote="prochobo" data-source="post: 2081685" data-attributes="member: 567127">My installer told me that the DEI 520T backup battery will not support my sirens with enough juice to run for any amount of time.  I have 7 sirens right now and I was just wondering if this is true or has he just got it installed wrong?I took a look at the install and there are 2 pairs of pos and neg wires on the module.  1 pair goes to the backup battery and I'm guessing the other pair goes to a constant 12v source right?  Well, it's hooked up right and I've verified that it's hooked up right with a DMM, but it doesn't work.  I can disconnect the neg battery terminal and the alarm does not do anything when it's armed.  Any ideas?</blockquote>

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