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The Notifier FST-851R is a commercial heat detector designed for compatible Notifier addressable fire alarm systems. It combines 135°F (57°C) fixed-temperature detection with rate-of-rise heat sensing, providing dependable thermal detection for areas where smoke detectors may not be suitable.
The detector features rotary decimal addressing, dual status LEDs, plug-in installation, and continuous communication with compatible Notifier control panels for alarm reporting and device supervision. This product is intended exclusively for commercial fire alarm installations.
The FST-851R operates on compatible Notifier signaling line circuits with an operating voltage range of 15–32 VDC. Rotary decimal switches allow simple address assignment, while the fire alarm control panel continuously supervises detector status and communication.
The detector supports both FlashScan® and CLIP communication protocols when used with compatible control panels. A compatible detector base is required and may be sold separately.
The FST-851R installs on compatible B210LP or B501 detector bases. Its plug-in design allows installation, inspection, testing, and replacement without disturbing field wiring, helping reduce maintenance time and simplify servicing.
Suitable for:
Compatible with:
Always verify compatibility with the installed fire alarm control panel, detector base, firmware version, and project requirements before installation.
Manufacturer: Notifier
Parent Company: Honeywell
Model: FST-851R
Product Type: Commercial Heat Detector
Detection Method: Fixed Temperature and Rate-of-Rise
Fixed Temperature Rating: 135°F (57°C)
Rate-of-Rise Response: Greater than 15°F (8.3°C) per Minute
Operating Voltage: 15–32 VDC Peak
Typical Standby Current: 300 µA @ 24 VDC
LED Current: 6.5 mA @ 24 VDC
Addressing: Rotary Decimal Switches
Status Indicators: Dual LEDs
Operating Temperature: –4°F to 100°F (–20°C to 38°C)
Operating Humidity: 10%–93% RH Non-Condensing
Maximum Detector Spacing: 50 ft (15.2 m) Centers
Mounting: B210LP or B501 Compatible Detector Base
Housing Color: White
Application: Indoor Commercial Fire Alarm Systems
Listings: UL Listed, ULC Listed, FM Approved, CSFM, MEA Listed, and additional regional approvals (application dependent).
The Notifier FST-851R is designed for commercial fire alarm systems requiring dependable thermal detection in environments where smoke detection may be impractical. Typical applications include mechanical equipment rooms, boiler rooms, commercial kitchens, warehouses, loading docks, utility spaces, manufacturing facilities, parking structures, and other commercial or industrial areas requiring fixed-temperature and rate-of-rise heat detection.
| Weight | 1 lbs |
|---|---|
| Dimensions | 5 × 5 × 5 in |
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The Notifier FST-851R is a commercial heat detector designed for compatible Notifier addressable fire alarm systems. It combines 135°F (57°C) fixed-temperature detection with rate-of-rise heat sensing, providing dependable thermal detection for areas where smoke detectors may not be suitable.
The detector features rotary decimal addressing, dual status LEDs, plug-in installation, and continuous communication with compatible Notifier control panels for alarm reporting and device supervision. This product is intended exclusively for commercial fire alarm installations.
The FST-851R operates on compatible Notifier signaling line circuits with an operating voltage range of 15–32 VDC. Rotary decimal switches allow simple address assignment, while the fire alarm control panel continuously supervises detector status and communication.
The detector supports both FlashScan® and CLIP communication protocols when used with compatible control panels. A compatible detector base is required and may be sold separately.
The FST-851R installs on compatible B210LP or B501 detector bases. Its plug-in design allows installation, inspection, testing, and replacement without disturbing field wiring, helping reduce maintenance time and simplify servicing.
Suitable for:
Compatible with:
Always verify compatibility with the installed fire alarm control panel, detector base, firmware version, and project requirements before installation.
Manufacturer: Notifier
Parent Company: Honeywell
Model: FST-851R
Product Type: Commercial Heat Detector
Detection Method: Fixed Temperature and Rate-of-Rise
Fixed Temperature Rating: 135°F (57°C)
Rate-of-Rise Response: Greater than 15°F (8.3°C) per Minute
Operating Voltage: 15–32 VDC Peak
Typical Standby Current: 300 µA @ 24 VDC
LED Current: 6.5 mA @ 24 VDC
Addressing: Rotary Decimal Switches
Status Indicators: Dual LEDs
Operating Temperature: –4°F to 100°F (–20°C to 38°C)
Operating Humidity: 10%–93% RH Non-Condensing
Maximum Detector Spacing: 50 ft (15.2 m) Centers
Mounting: B210LP or B501 Compatible Detector Base
Housing Color: White
Application: Indoor Commercial Fire Alarm Systems
Listings: UL Listed, ULC Listed, FM Approved, CSFM, MEA Listed, and additional regional approvals (application dependent).
The Notifier FST-851R is designed for commercial fire alarm systems requiring dependable thermal detection in environments where smoke detection may be impractical. Typical applications include mechanical equipment rooms, boiler rooms, commercial kitchens, warehouses, loading docks, utility spaces, manufacturing facilities, parking structures, and other commercial or industrial areas requiring fixed-temperature and rate-of-rise heat detection.
| Weight | 1 lbs |
|---|---|
| Dimensions | 5 × 5 × 5 in |
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