Edwards EST SIGA-H2D


Intelligent Fixed Temperature Heat Detector with Dual Reporting

Availability: In Stock

Condition: New
Brand: Edwards, EST
Status: Active
SKU: 44777
Manufacturer Part #: SIGA-H2D


The SIGA-H2D is a dual-reporting heat detector that features a fixed 135 °F (57.2 °C) Alarm threshold plus a separate programmable Emergency threshold:

Fixed temperature reporting generates an Alarm condition when the device’s 135 °F (57.2 °C) is reached;

Emergency reporting can be used to report elevated temperatures in evacuation elevator lobbies and machine rooms, as well as heat warnings and freeze warnings for areas that are sensitive to temperature extremes.

The SIGA-H2D does not have a rate-of-rise function. The heat sensor monitors the temperature of the air in its surroundings and the detector analyzes the data to determine when the air temperature near the detector exceeds the device’s set 135 °F (57.2 °C) Alarm threshold, or its programmed Emergency reporting point.

Like all Signature Series smoke detectors, the SIGA-H2D brings advanced sensing technology to a practical design that increases efficiency, saves installation time, cuts costs, and extends property protection capabilities. Continuous self-diagnostics ensures reliability over the long-haul, while the latest thermister technology makes these detectors ideal wherever dependable heat detection is required.

Additional information

Weight 0.2 lbs





Detection Method

Fixed Temperature



Production Status



  • Next generation heat sensing technology
  • 135 °F (57 °C) fixed temperature alarm point
  • Emergency temperature setting from 35 °F to 125 °F (1.7 °C to 51.7 °C)
  • Provides temperature sensing per NFPA 72 2016 21.5
  • Uses existing wiring
  • Automatic device mapping
  • Sensor Markings Provide Easy Testing Identification
  • Up To 250 Total Signature Devices Per Loop • Non-volatile memory
  • Electronic addressing
  • Bicolor (green/red) status LED
  • Standard, relay, fault isolator, and audible mounting bases
  • 50 foot (15.2 meter) spacing


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Intelligent Heat Detector with Dual Reporting; SIGA-H2D


Edwards – Data Sheet