Edwards EST SIGA-HRD RoR Heat Detector

The Edwards EST SIGA-HRD is an intelligent addressable heat detector for Signature Series loops. It provides rate-of-rise heat sensing with a 135 °F fixed threshold for fast-developing and slow-building fires, supported by environmental compensation, self-diagnostics, and a green/red status LED. Key Specifications: Type: Intelligent addressable heat detector Core Function(s): Rate-of-rise 15 °F/min with fixed 135 °F alarm point 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: Electronic addressing with automatic device mapping; 50 ft spacing 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. NOTE: Replaces SIGA-HFS & SIGA-HRS