Pay in 4 interest-free payments of $22.50 Learn more
Ships within 48 hours · Estimated delivery Aug 2 - Aug 7
System Sensor DNR Intelligent Photoelectric Duct Detector
allowing for flexible installation across various environments
Grsw Room Side Wiring Plate Required
• Alarm Signaling: Display and relay alarm signaling
25A Power Supply
Siemens FDO421 (S54320-F4-A1) Smoke Detector Sale System Sensor DNR Intelligent PhotoelectricSiemens FDO421 (S54320 F4 A1) Photoelectric Smoke Detector Model FDO421 incorporates an optical sensor using a light scattering detection principle. The device utilizes advanced software algorithms to analyze the signals and provides highly stable and accurate smoke detection. Model FDO421 also uses state of the art microprocessor circuitry with error checks, detector self diagnostics, and supervision programs. Each detector is UL 268 7th edition
US$ 15.99
US$ 22.00
US$ 15.00
US$ 15.00
US$ 15.00