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. (Made in Mexico)
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
