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As many as 32 DRI modules can be multi-dropped using RS485 2-wire or 4-wire communication up to 4,000 feet per port away from the ISC. The DRI includes eight inputs that support normally open, normally closed, supervised, and non-supervised circuits.
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.