EDWARDS Intelligent Multisensor Smoke & Heat Detector – SIGA-OSHD
Advanced Multi-Criteria Fire Detection Technology
Edwards SIGA-OSHD Intelligent Multisensor Smoke and Heat Detector combines advanced optical smoke sensing with rate-of-rise heat detection to deliver superior fire detection performance while significantly reducing nuisance alarms. Designed for use with Edwards Signature Series intelligent fire alarm systems, the SIGA-OSHD provides faster and more accurate response to both smoldering and fast-flaming fires.
The detector utilizes multi-criteria sensing technology, integrating optical smoke detection and heat sensing within a single intelligent device. Its sophisticated algorithms help distinguish genuine fire conditions from common airborne contaminants such as cooking particulates, improving reliability and reducing unwanted alarms.
Key Features
Multi-Criteria Detection Technology
- Combines optical smoke detection and heat sensing in a single device.
- Detects both smoldering and rapidly developing fires.
- Advanced onboard microprocessor continuously analyzes sensor data.
Intelligent Nuisance Alarm Rejection
- Dual optical wavelength technology.
- Multiple detection angles for enhanced particle analysis.
- Reduces false alarms caused by cooking vapors and non-fire aerosols.
Integrated Heat Detection
- Rate-of-rise heat detection function.
- Fixed temperature alarm threshold of 135°F (57.2°C).
- Enhanced protection for a wide range of fire scenarios.
Intelligent Addressable Operation
- Compatible with Edwards Signature Series intelligent systems.
- Electronic addressing with automatic device mapping.
- Continuous self-diagnostics and status monitoring.
Environmental Compensation
- Automatically adjusts sensitivity to compensate for dust accumulation and environmental changes.
- Reduces maintenance requirements and improves long-term reliability.
Applications
The SIGA-OSHD is ideal for:
- Commercial Office Buildings
- Hospitals & Healthcare Facilities
- Educational Institutions
- Hotels & Resorts
- Shopping Malls
- Data Centers
- Industrial Facilities
- Airports & Transportation Hubs
- Government Buildings
- High-Rise Residential Towers
Technical Specifications
| Description | Specification |
|---|---|
| Model | SIGA-OSHD |
| Type | Intelligent Multisensor Smoke & Heat Detector |
| Smoke Detection | Optical (Photoelectric) |
| Heat Detection | Rate-of-Rise & Fixed Temperature |
| Fixed Temperature Rating | 135°F (57.2°C) |
| Smoke Sensitivity Range | 0.5 – 4.36 %/ft Obscuration |
| Communication | Signature Data Circuit (SDC) |
| Addressing | Electronic Addressing |
| Environmental Compensation | Automatic |
| Operating Voltage | 15.2 – 19.95 VDC |
| Operating Temperature | 32°F to 100°F (0°C to 38°C) |
| Relative Humidity | Up to 93% Non-Condensing |
| Certifications | UL 268 7th Edition, UL 268A, UL 521, ULC, FM |
Benefits
✅ Dual smoke and heat detection in one device
✅ Faster response to a wider range of fire types
✅ Reduced nuisance and cooking-related alarms
✅ Intelligent self-diagnostics and maintenance alerts
✅ Automatic environmental compensation
✅ Seamless integration with Edwards Signature Series systems
✅ Enhanced life safety and property protection
Compatible Bases
The SIGA-OSHD is compatible with various Signature Series mounting bases, including:
- SIGA-SB Standard Base
- SIGA-RB Relay Base
- SIGA-IB Isolator Base
- SIGA-AB4G Audible Base
- SIGA-LED Remote Alarm Indicator Base
Typical System Integration
The SIGA-OSHD can be integrated with:
- Intelligent Fire Alarm Control Panels
- Emergency Voice Evacuation Systems
- Building Management Systems (BMS)
- Smoke Control Systems
- HVAC Shutdown Systems
- Remote Monitoring Stations
