SIGA-OSD-FCN

The Edwards SIGA-OSD-FCN is an intelligent optical smoke detector from the Signature Optica Series, featuring advanced multi-criteria photoelectric sensing for superior fire detection while rejecting nuisance alarms from cooking smoke, steam, or dust.
Designed specifically for Asian markets, it uses dual optical wavelengths with multiple detection angles and on-board microprocessor analysis for precise smoke particle discrimination, integrating seamlessly with Edwards EST fire alarm control panels.
Key Specifications
Feature
Specification
Display
Dual-color LED (Green: Normal / Red: Alarm)
Sensing Method
Optical (Photoelectric) Multi-criteria
Sensitivity Range
0.5 to 4.36%/ft. (1.6 to 13.6%/m) obscuration
Device Capacity
Up to 250 addresses per Signature Loop
Communication
Signature Data Circuit (15.2–19.95 VDC)
Standard Functions
Self-diagnostics, Nuisance rejection, Day/Night sensitivity, 20 Pre-alarm settings
Mounting Bases
Standard, Relay, Fault Isolator, Audible (SIGA-SB compatible)
Aux Input
Environmental compensation sensor
Power Supply
15.2–19.95 VDC (loop-powered)
Operating Temp
0°C–49°C (32°F–120°F, 0-93% RH non-condensing)