Description
The Siemens FDOT421 is an intelligent addressable multi-criteria fire detector that combines photoelectric smoke sensing and thermal detection in a single device. It is designed to improve fire detection accuracy by analyzing multiple environmental factors, reducing false alarms while maintaining reliable response to real fire conditions.
Using advanced signal processing and neural network algorithms, the FDOT421 evaluates both smoke and heat data to distinguish between actual fire events and nuisance conditions such as dust or steam. This makes it suitable for a wide range of commercial applications, including open areas and air duct installations.
The detector features built-in ISOtechnology for enhanced SLC circuit reliability and fault isolation, along with continuous self-diagnostics to ensure proper operation. It integrates seamlessly with Siemens Desigo Fire Safety and FireFinder XLS/V systems and is installed using compatible plug-in mounting bases for efficient maintenance and replacement.


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