



Notifier FSI-851 Intelligent Photoelectric Smoke Detector for Fire Alarm Systems
£168.30
Notifier FSI-851 is an intelligent, addressable photoelectric smoke detector designed for accurate fire detection and reliable performance in commercial fire alarm systems using FlashScan® or CLIP protocols.
- Description
- Additional information
- Technical Specification
Description
The Notifier FSI-851 is a premium photoelectric smoke detector from the 851 Series, built to deliver advanced fire detection and seamless integration with intelligent fire alarm control panels. Designed for use with FlashScan® and CLIP communication protocols, the FSI-851 offers precise analog addressable capability, allowing accurate identification of detector location during alarm or maintenance.
Its low-profile design houses a high-performance optical sensing chamber that reliably detects smoke from a wide variety of fire types. The FSI-851 supports rotary decimal addressing, dual 360° visible bicolor LEDs, and a built-in test switch for streamlined operation and testing. With tamper-resistant features and compatibility with optional relay, isolator, or sounder bases, this detector is ideal for large-scale commercial or institutional fire safety systems.
Features & Benefits:
- Intelligent photoelectric smoke detection
- Addressable analog communication
- Compatible with FlashScan® and CLIP systems
- Rotary decimal addressing (1–99 for CLIP, 1–159 for FlashScan)
- Dual bicolor LEDs provide 360° status visibility
- Remote test and walk test with address display
- Low standby current
- Built-in magnet-activated functional test switch
- Tamper-resistant design and sealed construction
- Commercial-grade off-white plastic housing
- 94-5V flammability-rated material
- SEMS terminal screws for secure installation
- Supports optional relay, isolator, or sounder bases
- Listed to UL 268
Additional information
Weight | 0.20 lbs |
---|---|
Dimensions | 2.00 in |
Manufacturer | Honeywell International |
Brand | Notifier |
Model No | FSI-851 |
Sensitivity: 0.5% to 2.5% per foot obscuration
Size: 2.0″ (51 mm) high; base determines diameter.
– B210LP(A): 6.1″ (15.5 cm) diameter.
– B501(A): 4.1″ (10.4 cm) diameter.
– B200S(A): 6.875″ (17.46 cm) diameter.
– B200SR(A): 6.875″ (17.46 cm) diameter.
– B224RB(A): 6.2″ (15.748 cm) diameter.
Shipping Weight: 5.4 oz. (153 g).
Operating Temperature: 0°C to 49°C (32°F to 120°F).
UL/ULC-Listed Velocity Range: ION: 0 – 1200 ft./min.
(365.76 m/min.).
Relative Humidity: 10% – 93% noncondensing.
ELECTRICAL SPECIFICATIONS
Voltage Range: 15 – 32 volts DC peak.
Standby Current (max. avg.): 300 A
LED Current (max.): 6.5 mA @ 24 VDC (“ON”).

Notifier FSI-851 Intelligent Photoelectric Smoke Detector for Fire Alarm Systems
£168.30
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