The Edwards EST SIGA-CT2 is an intelligent analog addressable dual input module designed to connect and supervise two Class B normally-open dry contact initiating device circuits (IDCs) on the Signature Series signaling line circuit (SLC).

Each input circuit is independently programmable using installer-selected “personality codes” downloaded from the Signature loop controller. Supported applications include Alarm (latching), Alarm with delayed latching (waterflow), Supervisory, and Monitor functions.

The module mounts in a standard North American 1-gang electrical box and provides separate I/O and data loop connections. It incorporates onboard microprocessor intelligence for signal analysis and alarm decision-making, and supports automatic device mapping and electronic addressing through the loop controller or SIGA-PRO programming tool.