Question about Honeywell | Ademco Speaker/Horn 749
There are 4 wires on the 749. Two white and two black. The two black wires connect to the bell or siren output of your alarm panel. The 649 needs 6 to 12VDC to work. The two white wires are for a built in tamper switch that can be connected to a zone on your panel if you want.
Hope this helps
Posted on Mar 19, 2011
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Posted on Jan 02, 2017
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