Description
The Notifier FS-OSI-RI is an intelligent single-ended reflective beam smoke detector designed for monitoring large open spaces with high ceilings. This detector uses infrared light obscuration to detect smoke and integrates both transmitter and receiver in a single unit. It provides reliable addressable communication with Notifier fire alarm control panels for use in warehouses, atriums, hangars, arenas, and similar applications.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Notifier (Honeywell International) |
| Category |
Fire Safety |
| Part Number |
FS-OSI-RI |
| Subcategory |
Beam Smoke Detectors |
| Detection Method |
Infrared light obscuration, photoelectric imaging |
| Protocol |
FlashScan® / CLIP |
| Operating Voltage |
15–32 VDC (nominal 24 VDC) |
| Standby Current |
13–20 mA depending on input voltage |
| Alarm Current |
15–22 mA depending on input voltage |
| Coverage Range |
16–328 ft (5–100 m) |
| Alignment Adjustment |
±50° horizontal, ±20° vertical |
| Field of View |
12° wide imager |
| Sensitivity Settings |
25%, 30%, 40%, or 50% obscuration |
| Environmental Rating |
0–95% RH, non-condensing |
| Operating Temperature |
UL listed: 32°F to 100°F (0°C to 37.8°C); application range: -4°F to 131°F (-20°C to 55°C) |
| Built-in Features |
Heater, LED alignment indicators, drift compensation |
| Remote Test Options |
RTS151 / RTS151KEY stations, OSP-004 filter |
| Dimensions (Detector) |
6 × 10 × 4.5 in (152 × 254 × 114 mm) |
| Dimensions (Reflector) |
9.06 × 7.87 in (230 × 200 mm) |
| Weight |
4 lbs (1.8 kg) |
Information About FS-OSI-RI
The FS-OSI-RI is part of Notifier’s advanced intelligent detection line and operates as a reflector-type linear beam detector. It is compatible with Notifier NFW-50X, NFW-100X, NFS-320, NFS2-640, and NFS2-3030 panels operating in FlashScan® or CLIP protocol. The device includes an intuitive LED-guided alignment system, a wide field of view, and a built-in imager heater for stable operation. Designed to resist building movement, sunlight interference, and foreign object intrusion, the FS-OSI-RI ensures dependable smoke detection in challenging environments.
Key Features:
- Integrated Unit: Combines transmitter and receiver into one device for simpler installation.
- Wide Field of View: 12° imager field enables alignment tolerance and tracking of reflector movement.
- LED Alignment Aid: Directional LEDs guide precise positioning during setup.
- Extended Coverage: Protects distances from 16 to 328 ft (5–100 m) without additional kits.
- Environmental Resistance: Filters and software reduce false alarms from sunlight or bright light sources.
- Drift Compensation: Automatically adjusts for long-term contamination of optical surfaces.
- Built-in Heater: Prevents condensation on the optical surface in humid or cold environments.
- Remote Testing: Compatible with RTS151 test stations for ground-level electronic smoke simulation.
The FS-OSI-RI delivers the reliability and precision required for large-area fire protection in demanding open-space applications.
