The Siemens FDT421 Intelligent Thermal Detector is a precision engineering solution designed for comprehensive heat detection in commercial and institutional fire alarm systems. This addressable detector provides advanced thermal sensing capabilities, utilizing state-of-the-art thermal sensing technology to detect rapidly rising temperatures or fixed temperature thresholds in complex environmental conditions.
Engineered for seamless integration with Siemens FireFinder XLS and other compatible addressable fire alarm control panels, the FDT421 offers superior performance in challenging environments such as mechanical rooms, industrial facilities, electrical closets, and HVAC infrastructure. Its intelligent design enables precise thermal event recognition, minimizing false alarm potential while maintaining critical life safety response protocols.
Key Features
- Intelligent addressable technology with direct communication to fire alarm control panels
- Dual detection criteria: Fixed temperature (135°F) and Rate-of-Rise temperature sensing
- Compatible with standard 4-inch mounting bases and Siemens addressable circuits
- Low-profile design with corrosion-resistant housing for extended operational reliability
- UL 268 and NFPA 72 compliant for comprehensive fire detection standards
- LED indicator for visual status confirmation during system testing and normal operation
Specifications
- Operating Voltage: 15-32 VDC
- Standby Current: < 200 µA
- Alarm Current: 5-7 mA
- Temperature Rating: 135°F Fixed / Rate-of-Rise
- Dimensions: 4.25″ diameter, 2″ height
- Environmental Rating: Indoor use, non-corrosive environments
Ideal for commercial applications including office complexes, manufacturing facilities, data centers, and institutional buildings, the Siemens FDT421 represents a critical component in comprehensive fire detection and life safety infrastructure. Its precision engineering ensures reliable thermal event detection while maintaining strict compliance with contemporary fire protection standards.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 1 lbs |
|---|---|
| Dimensions | 5 × 5 × 3 in |
| Condition | New |
| Manufacturers | Siemens |
| Part Type | Annunciator |
