Edwards SIGA2-HRS Rate of Rise Heat Detector

The Edwards SIGA2-HRS is a rate-of-rise heat detector designed for commercial addressable fire alarm systems. It monitors changes in surrounding air temperature and initiates an alarm when the temperature rises at approximately 15°F (9°C) per minute, providing rapid detection of fast-developing fire conditions.

Part of the Edwards Signature Series, the SIGA2-HRS incorporates onboard microprocessor technology for processing, self-diagnostics, automatic device mapping, stand-alone operation, and fast communication with compatible fire alarm control equipment.

Product Functions

• Detects rapid increases in ambient temperature
• Provides rate-of-rise thermal fire detection
• Activates at approximately 15°F per minute temperature rise
• Reports alarm conditions to the fire alarm control panel
• Provides individual addressable point identification
• Performs onboard self-diagnostics
• Supports automatic device mapping
• Maintains detector history information
• Supports stand-alone alarm operation
• Provides visual status indication
• Supports commercial fire alarm systems

Heat Detection Performance

The SIGA2-HRS uses an electronic thermal sensor to continuously monitor surrounding air temperature. Its rate-of-rise alarm point is approximately 15°F (9°C) per minute, allowing the detector to respond rapidly when temperatures increase quickly during a developing fire.

The detector is intended primarily for property protection and should be applied according to the approved system design and applicable fire alarm requirements. Edwards documentation specifies maximum spacing of up to 50 feet (15.2 meters) on centers, subject to installation conditions and code requirements.

Communication

The SIGA2-HRS incorporates an onboard microprocessor that analyzes detector information and communicates status to compatible Edwards Signature Series fire alarm equipment. This processing allows the detector to provide individual point identification rather than functioning only as a conventional zone device.

Automatic Device Mapping assists with system commissioning by helping identify the physical arrangement of Signature devices on the signaling circuit. The detector also supports self-diagnostics and history logging for improved maintenance and troubleshooting.

Status Indication

The detector incorporates a bi-color green and red LED for visual operating status. The indicator provides convenient confirmation of normal communication and alarm conditions, assisting technicians during system inspection, testing, and troubleshooting.

Detector Base Options

The SIGA2-HRS uses a plug-in mounting arrangement and supports multiple Signature Series detector base configurations. Available base options include standard, relay, fault-isolator, and audible base configurations, allowing the detector installation to be adapted to different system requirements.

Physical & Environmental Information

The SIGA2-HRS is constructed from high-impact engineering polymer and uses a low-profile plug-in design. Edwards documentation specifies an operating environment of approximately 32°F to 100°F (0°C to 38°C) with relative humidity up to 93% noncondensing.

The detector has a shipping weight of approximately 0.44 lb (164 g) and is designed for indoor commercial fire detection installations.

Protection & Applications

Suitable for:

• Commercial Fire Alarm Systems
• Addressable Fire Alarm Systems
• Rate-of-Rise Heat Detection
• Office Buildings
• Hospitals
• Healthcare Facilities
• Schools and Universities
• Hotels
• Government Buildings
• Industrial Facilities
• Warehouses
• Mechanical Areas
• Utility Areas
• Indoor Thermal Fire Detection

SIGA2-HRS Datasheet