SIGA-OSD-IN | Edwards Signature Optica Intelligent Smoke Detector with Built-in Isolator
Edwards EST · Fire & Life Safety
Description The Edwards™ SIGA-OSD-IN is an intelligent optical smoke detector with a built-in isolator from the Signature Optica Series. It combines advanced dual-wavelength sensing with automatic circuit isolation, ensuring reliable fire detection and fault tolerance on addressable loops. Designed for use with Edwards Signature panels, it provides early smoke detection with reduced false alarms. Technical Specifications Condition New/Never Used Surplus Brand Edwards Category Fire Safety Part Number SIGA-OSD-IN Subcategory Smoke Detector Sensing Technology Photoelectric (Optical) Integrated Feature Built-in fault isolator Smoke Obscuration Range 0.5 to 4.36 %/ft Sensitivity Settings 5 selectable levels Pre-alarm Settings 20 thresholds Environmental Compensation Two levels Dirty Detector Warning Two levels Addressing Electronic, up to ~250 devices per loop Base Compatibility Signature standard, relay, audible bases Status LED Bicolor (Green/Red) Communication Format Digital peer-to-peer protocol Listings/Approvals UL 268 7th Edition, compatible with Signature loop controllers Application Intelligent fire detection with built-in circuit isolation Weight 0.42 lbs Information About SIGA-OSD-IN The SIGA-OSD-IN is part of the Edwards Signature Optica family of addressable detectors, designed for intelligent fire alarm systems. Unlike the standard SIGA-OSD, this model integrates an isolator, allowing it to automatically separate shorted sections of the loop while maintaining communication with other devices. It employs dual-angle, multi-wavelength optical sensing technology for accurate smoke identification, filtering out nuisance particles such as dust or steam. The detector supports multiple sensitivity settings, environmental compensation, and self-diagnostics, making it suitable for a wide range of commercial and industrial fire protection applications. Key Features: Built-in Isolator: Provides automatic circuit isolation during short-circuit conditions. Advanced Optical Sensing: Dual wavelengths and multiple detection angles for accurate smoke detection. False Alarm Resistance: Intelligent algorithms reduce nuisance alarms from non-smoke particulates. Environmental Compensation: Adjusts sensitivity over time to maintain stable performance. Service Alerts: Two levels of dirty detector warnings for timely maintenance. Flexible Programming: Five sensitivity levels and twenty pre-alarm thresholds for customization. Loop Compatibility: Operates on Signature addressable circuits with up to 250 devices per loop. Automatic Device Mapping: Panel identifies and supervises device locations automatically. On-board Microprocessor: Enables distributed intelligence and faster decision-making. Diagnostic Functions: Self-testing with non-volatile memory for history and status retention. LED Status Indicators: Bicolor LEDs provide clear visual feedback for normal, alarm, and fault states. The SIGA-OSD-IN delivers precise detection, built-in fault isolation, and system reliability for demanding fire safety applications.
Brand: Edwards EST · Category: Fire & Life Safety
Key features
- Built-in Isolator: Provides automatic circuit isolation during short-circuit conditions.
- Advanced Optical Sensing: Dual wavelengths and multiple detection angles for accurate smoke detection.
- False Alarm Resistance: Intelligent algorithms reduce nuisance alarms from non-smoke particulates.
- Environmental Compensation: Adjusts sensitivity over time to maintain stable performance.
- Service Alerts: Two levels of dirty detector warnings for timely maintenance.
- Flexible Programming: Five sensitivity levels and twenty pre-alarm thresholds for customization.
- Loop Compatibility: Operates on Signature addressable circuits with up to 250 devices per loop.
- Automatic Device Mapping: Panel identifies and supervises device locations automatically.
- On-board Microprocessor: Enables distributed intelligence and faster decision-making.
- Diagnostic Functions: Self-testing with non-volatile memory for history and status retention.
- LED Status Indicators: Bicolor LEDs provide clear visual feedback for normal, alarm, and fault states.
Specifications
| Manufacturer part number | SIGA-OSD-IN |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Edwards |
| Category | Fire Safety |
| Part Number | SIGA-OSD-IN |
| Subcategory | Smoke Detector |
| Sensing Technology | Photoelectric (Optical) |
| Integrated Feature | Built-in fault isolator |
| Smoke Obscuration Range | 0.5 to 4.36 %/ft |
| Sensitivity Settings | 5 selectable levels |
| Pre-alarm Settings | 20 thresholds |
| Environmental Compensation | Two levels |
| Dirty Detector Warning | Two levels |
| Addressing | Electronic, up to ~250 devices per loop |
| Base Compatibility | Signature standard, relay, audible bases |
| Status LED | Bicolor (Green/Red) |
| Communication Format | Digital peer-to-peer protocol |
| Listings/Approvals | UL 268 7th Edition, compatible with Signature loop controllers |
| Application | Intelligent fire detection with built-in circuit isolation |
| Weight | 0.42 lbs |
| Product type | Smoke Detector |
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