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For use on Simplex 4100, 4100+, 4120, Universal Transponder, 4100U, and 4100ES panels. The 565-453 is a signal card for use on Simplex 4100 fire alarm panels. Each card contains up to 6 circuits for notification appliances.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.