Two-Port Fiber Optic Contact Closure Converter for Door and Alarm Systems

This device is a 2-port contact closure converter designed for fiber optic connections. It supports singlemode fiber optic cables with a range of up to 12.4 miles. The converter is used to transmit signals for door open and door close functions, entry access control, alarm systems, and other applications. It comes as a pair, allowing for reliable communication over long distances through fiber optic technology.