NOTIFIER FST-951 Fire Alarm Heat Detector - This intelligent thermal sensor provides rapid, reliable detection of abnormal temperature increases in critical life-safety environments. Engineered for precision, it integrates seamlessly into existing fire alarm systems to ensure early warning capabilities. - 135°F fixed temperature threshold - Rate-of-rise detection at 15°F per minute - UL 521 listed for regulatory compliance - Two-wire communication loop architecture - Low-profile design at 2.1 inches high

Compared to legacy analog thermal devices, the FST-951 significantly improves responsiveness through advanced digital signal processing. This model replaces older mechanical heat sensors by offering consistent, drift-compensated monitoring that minimizes false alarms caused by environmental fluctuations or dust accumulation.

Enhanced Detection and System Reliability

The FST-951 utilizes sophisticated algorithms to distinguish between ambient heat cycles and actual fire conditions, providing a higher level of accuracy for building security. Its streamlined mounting plate and plug-in design simplify installation, allowing technicians to verify configurations quickly while maintaining long-term hardware stability across the entire fire alarm network.