WHITE INTELLIGENT THERMAL DETECTOR HEAD
FDT421 Siemens Intelligent Thermal (Heat) Detector
The Intelligent Thermal (Heat) Detector (Model FDT421 Siemens) provides an advanced method of detection, address programming supervision combined with sophisticated FACP communication. Model FDT421 uses a state-of-the-art thermistor, microprocessor and advanced signal analysis, providing high reliability and accuracy.
Additionally, Each Model FDT421 unit is UL listed including advanced built-in ISOtechnology - a True Class-X1/2 SLC operation (use is optional) greatly improving system reliability and circuit integrity while providing advanced addressable fault finding.
Each model FDT421 is a cost-effective, two-wire / addressable thermal detector that provides a distinctive, advanced feature: seven (7) field-selectable temperature settings specially tailored for application-specific detection needs combined with Class-X SLC operation built-in avoiding additional installation and material cost.
The temperature-range settings for each Model FDT421 detector is between 135Ã‚Â°F (57Ã‚Â°C) 174Ã‚Â°F (79Ã‚Â°C) with fixed and rate-of-rise programmability. This variance provides the customer with maximum flexibility to program the temperature settings to suit m(more...)