NOTIFIER FST-951 Fire Alarm Heat Detector - The FST-951 is an intelligent, plug-in thermal sensor designed for high-speed fire detection in environments where traditional smoke sensors may trigger false alarms. By utilizing advanced thermistor technology, this device provides precise temperature monitoring to ensure rapid emergency response.

Operating Temperature Range: -4°F to 158°F (-20°C to 70°C)

Alarm Set Point: 135°F (57°C) fixed temperature

Operating Voltage: 15 to 32 VDC

Standby Current: 300 µA at 24 VDC

Device Protocol: FlashScan and CLIP compatible

This unit represents a significant evolution in life-safety hardware, offering improved thermal response times compared to previous legacy heat sensors. Unlike older mechanical thermal detectors that relied on slow-acting bimetallic elements, this modern digital sensor integrates seamlessly with existing fire alarm control panels to provide reliable, data-driven protection that meets stringent modern building code requirements.

Enhanced Thermal Sensing Capabilities

The FST-951 utilizes a specialized thermistor circuit to provide superior sensitivity to rapid temperature shifts. This intelligent design allows for a stable, programmable response that effectively distinguishes between ambient heat fluctuations and actual fire conditions, significantly reducing the likelihood of unwanted activations in challenging industrial or commercial settings.