Not sure if this is the section or category to post manuals, but heres the ESL 522/523 Smoke Detector manual.
By confirming this, this detector is four wire.
Good stuff! No worries about posting in the wrong place - usually if it needs to be moved we’ll move it and you won’t be in any trouble for it.
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Ok, thanks. Took me awhile to scan the manual, because its a booklet.
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