Edwards EST SIGA-OSCD Smoke and Carbon Monoxide (CO) Detector

The Edwards EST SIGA-OSCD is an intelligent addressable multisensor smoke and carbon monoxide detector for Signature Series loops. It combines advanced optical smoke sensing that uses dual wavelengths and multiple angles with supervised CO monitoring. On-board processing with nuisance rejection, environmental compensation, self-diagnostics, and a green or red status LED keeps performance clear and dependable at a glance. Key Specifications: Type: Intelligent addressable smoke and CO multisensor Core Function(s): Optical smoke detection with nuisance-alarm reduction; supervised CO monitoring Loop/Protocol: Signature Series SLC Power: 15.20 to 19.95 VDC Indicators/UI: Bi-color status LED Operating Range: 32 to 120 °F; 0 to 90% RH, non-condensing Notes: CO sensor service life 10 years or until panel end-of-life indication Compatible Bases & Accessories: SIGA-SB – Standard base SIGA-SB4 – 4-inch standard base with trim skirt SIGA-RB – Relay base SIGA-RB4 – 4-inch relay base with trim skirt SIGA-IB – Fault isolator base SIGA-IB4 – 4-inch fault isolator base with trim skirt SIGA-AB4G-LF – 520 Hz low-frequency sounder base SIGA-AB4GT – Audible sounder base SIGA-TCDR – Temporal pattern generator for fire and CO tone separation SIGA-LED – Remote alarm LED for SB and SB4 bases SIGA-TS4 – Trim skirt for 4-inch bases System Compatibility: Signature Series control panels using a Signature loop controller.