Notifier FST-851H Heat Detector

The Notifier FST-851H is an intelligent addressable high-temperature heat detector designed for use with compatible Notifier fire alarm control panels. The Notifier FST-851H utilizes advanced thermistor sensing technology to provide fixed high-temperature detection at 190°F (88°C), making it ideal for environments where standard heat detectors may not be suitable. Therefore, it delivers dependable fire detection for industrial, commercial, and specialized applications exposed to elevated ambient temperatures.

Notifier FST-851H Function

The FST-851H is designed to detect excessive heat conditions and to communicate the alarm status directly to the fire alarm control panel via the signaling line circuit (SLC). As a result, emergency personnel can quickly identify the exact detector location and respond appropriately. In addition, the detector continuously reports its status to the control panel for enhanced system supervision and reliability.

High-Temperature Thermal Detection

The Notifier FST-851H is factory preset to activate at 190°F (88°C). Consequently, it is well suited for areas where normal ambient temperatures may exceed the operating range of standard 135°F heat detectors. Furthermore, the high-temperature design helps reduce unwanted alarms while maintaining dependable fire detection performance.

Advanced Thermistor Technology

The FST-851H utilizes state-of-the-art thermistor sensing technology for fast and accurate thermal response. Therefore, the detector can reliably identify dangerous temperature conditions while maintaining stable operation in demanding environments. Additionally, thermistor-based sensing provides consistent performance and long-term reliability.

Intelligent Addressable Communication

The Notifier FST-851H communicates using Notifier FlashScan® and CLIP protocol technology. As a result, each detector can be individually identified by address, allowing precise device location reporting during alarm, supervisory, or trouble conditions. Moreover, intelligent communication improves maintenance efficiency and system diagnostics.

Rotary Address Switches

The detector includes rotary decimal address switches that simplify installation and commissioning. Consequently, installers can quickly assign detector addresses without specialized programming tools. Furthermore, rotary addressing simplifies service and replacement procedures by providing clear physical address settings.

Dual LED Status Indicators

The FST-851H incorporates dual bi-color LEDs that provide a full 360-degree viewing angle. Therefore, personnel can easily identify detector status from multiple directions. During normal operation the LEDs flash when polled, and during alarm conditions the LEDs illuminate steadily for rapid identification.

Compatible Notifier Systems

The Notifier FST-851H is designed for use with compatible Notifier addressable fire alarm control panels, including:

• Notifier ONYX Series Systems
• FlashScan Protocol Systems
• CLIP Protocol Systems
• Intelligent Addressable Fire Alarm Networks

Therefore, it provides seamless integration within Notifier life safety installations.

Ideal High-Temperature Applications

The FST-851H is commonly installed in:

• Boiler rooms
• Mechanical equipment rooms
• Manufacturing facilities
• Industrial plants
• Commercial kitchens
• Engine rooms
• Utility facilities
• Electrical generation areas
• Warehouses
• High-temperature process environments

Consequently, it provides dependable fire detection where elevated ambient temperatures may limit the use of conventional thermal or smoke detectors.

Technical Specifications

• Model: FST-851H
• Manufacturer: Notifier
• Type: Intelligent Addressable High-Temperature Heat Detector
• Detection Method: Fixed High-Temperature Thermal Detection
• Alarm Temperature: 190°F (88°C)
• Sensing Technology: Thermistor
• Communication Protocol: FlashScan® and CLIP
• Addressing: Rotary Decimal Address Switches
• Status Indicators: Dual Bi-Color LEDs
• Viewing Angle: 360 Degrees
• Wiring: Two-Wire SLC Connection
• Operating Temperature Range: -4°F to 150°F (-20°C to 66°C)
• Mounting: Compatible with Notifier Detector Bases
• Device Identification: Built-In Type Identification
• Testing: Magnet Test Capability and Remote Test Functions
• Listings: UL Listed, FM Approved, CSFM Approved
• Application: Commercial and Industrial Fire Alarm Systems

Applications

The Notifier FST-851H is ideal for:

• Fire alarm systems
• Industrial facilities
• Manufacturing plants
• Boiler rooms
• Mechanical spaces
• Commercial kitchens
• Utility buildings
• High-temperature environments
• Process facilities
• Warehouses
• Institutional facilities
• Retrofit fire alarm projects

Reliable High-Temperature Fire Detection Solution

The Notifier FST-851H combines intelligent addressable communication, advanced thermistor sensing, rotary addressing, dual LED indicators, and fixed 190°F high-temperature detection in a dependable fire alarm detector. Overall, it provides reliable thermal fire detection for challenging environments where elevated ambient temperatures require specialized protection while maintaining full compatibility with Notifier intelligent fire alarm systems.

FST-851H