Simplex 565-610 B 4 Point IDC Assembly Circuit Board

Simplex 565-610 4-Point IDC Relay Base Module 4005-9824

Simplex 565-233 Fire Alarm Remote Interface II Circuit Board

Simplex 565-473 D 4 Point IDC Assembly Circuit Board

Simplex 4098-5601 (Replace 4098-9601)

Simplex 565-627 Contact Closure DACT Circuit Board Fire Alarm 565627

Simplex 4100 power distribution Expander Fire interface Circuit Board 566-084