EDWARDS Intelligent Heat Detector – SIGA-HRD
Fixed Temperature & Rate-of-Rise Heat Detector for Signature Series Systems
The SIGA-HRD Intelligent Heat Detector is an addressable heat detector designed for use with Edwards Signature Series Fire Alarm Systems. It combines fixed-temperature and rate-of-rise heat detection technologies in a single device, providing reliable fire detection in areas where smoke detectors may be unsuitable due to dust, steam, fumes, or airborne contaminants.
Dual Heat Detection Technology
- Fixed temperature alarm point of 135°F (57°C).
- Rate-of-rise alarm activation at 15°F (8–9°C) per minute.
- Provides rapid response to fast-flaming fires while maintaining reliable detection of slow-developing fires.
Intelligent Addressable Operation
- Compatible with Edwards Signature Loop Controllers.
- Electronic addressing eliminates mechanical address switches.
- Automatic device mapping simplifies commissioning and maintenance.
Advanced Thermistor Technology
- Next-generation heat sensing technology.
- Continuously monitors surrounding air temperature.
- Intelligent onboard processing analyzes sensor data for accurate alarm decisions.
Continuous Self-Diagnostics
- Built-in self-testing and detector health monitoring.
- Non-volatile memory stores maintenance and operating information.
- Improves long-term reliability and service efficiency.
Visual Status Indication
- Bi-color LED indication.
- Green LED indicates normal operation.
- Red LED indicates alarm condition.
Applications
The SIGA-HRD is ideal for:
- Electrical Rooms
- Generator Rooms
- Boiler Rooms
- Kitchens
- Parking Areas
- Warehouses
- Mechanical Equipment Rooms
- Industrial Facilities
- Dusty Environments
- Areas Unsuitable for Smoke Detection
Technical Specifications
| Description | Specification |
|---|---|
| Model | SIGA-HRD |
| Detector Type | Intelligent Fixed Temperature & Rate-of-Rise Heat Detector |
| Fixed Temperature Rating | 135°F (57°C) |
| Rate-of-Rise Rating | 15°F (8–9°C) per Minute |
| Communication | Signature Data Circuit (SDC) |
| Addressing | Electronic Addressing |
| Device Capacity | Up to 250 Signature Devices per Loop |
| Operating Voltage | 15.2 – 19.95 VDC |
| Status Indication | Bi-Color Green/Red LED |
| Memory | Non-Volatile Memory |
| Certifications | UL, ULC, FM, CSFM Listed |
Compatible Bases
The SIGA-HRD can be installed with:
- SIGA-SB Standard Base
- SIGA-RB Relay Base
- SIGA-IB Isolator Base
- SIGA-AB4G Audible Base
- SIGA-AB4GT Audible Base
- SIGA-AB4G-LF Low Frequency Audible Base
- SIGA-LED Remote Alarm Indicator
Benefits
✅ Combined fixed-temperature and rate-of-rise detection
✅ Fast response to rapidly developing fires
✅ Intelligent addressable technology
✅ Automatic device mapping
✅ Continuous self-diagnostics
✅ Easy installation using existing wiring
✅ Reduced maintenance costs
✅ Seamless integration with EST3X and Signature Series systems
Typical System Integration
The SIGA-HRD integrates seamlessly with:
- EST3X Life Safety Control Systems
- EST4 Fire Alarm Systems
- Signature Series Intelligent Panels
- Emergency Voice Evacuation Systems
- Building Management Systems (BMS)
- Central Monitoring Stations
- Industrial Fire Protection Systems
City Fire & Safety Services (Pvt) Ltd
Supply • Installation • Testing • Commissioning • Maintenance
