Edwards EST M500SF Supervise Control Module EST SIGA-CC2A They provide location specific addressability

They provide location specific addressability to a single initiating device (such as single station smoke detector alarm contacts or heat detector contacts) or multiple devices at the same location by monitoring normally open dry contacts and the wiring to an end-of-line resistor

this is a programmable option

ISO-101 Fault Isolator Module

it provides a two wire initiating circuit for normally open contact fire alarm and security devices

The Edwards SIGA-CC2 Dual Module starts generating and connecting commands from the loop controller

Edwards EST M500SF Supervise Control Module EST SIGA-CC2A They provide location specific addressabilityMonitor and control modules can be used to supervise and activate sounders, strobes, door closers, pull stations, waterflow switches, conventional smoke detectors, and more. Each module is rigorously designed and tested for electromagnetic compatibility and environmental reliability, in many cases exceeding industry standards.