Edwards EST SIGA-PHD Smoke and Heat Detector

This part has been discontinued and replaced by SIGA-OSHD. The Edwards EST SIGA-PHD is an intelligent addressable smoke and heat multisensor for Signature Series loops. It pairs optical smoke sensing with rate-of-rise heat and a fixed 135 °F threshold to cover both slow smoldering and fast flaming fires. On-board processing with environmental compensation, self-diagnostics, and a green/red status LED supports dependable performance at a glance. Key Specifications: Type: Intelligent addressable smoke and heat multisensor Core Function(s): Photoelectric smoke; rate-of-rise heat with fixed 135 °F Loop/Protocol: Signature Series SLC Power: 15.20 to 19.95 VDC Indicators/UI: Bi-color status LED Operating Range: 32 to 100 °F; 0 to 93% RH, non-condensing Notes: Five sensitivity settings with day/night and pre-alarm options 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 – Audible sounder base SIGA-AB4G-LF – 520 Hz low-frequency sounder base SIGA-AB4GT – Audible sounder base SIGA-LED – Remote alarm LED for SB/SB4 bases SIGA-TS4 – Trim skirt for 4-inch bases System Compatibility: Signature Series control panels using a Signature loop controller.