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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
1600P-690 (Bronze)
tangle-free installation
Includes battery bracket for secure installation
Wi-Fi 6 Access Point with PoE+ 6
System Sensor D4120 Marks USA 1600P-690 (Bronze)System Sensor D4120 4 Wire 24VDC 120VAC Photoelectric Low Flow Duct Smoke Detector System Sensor D4120 4 Wire Photoelectric Low Flow Duct Smoke Detector provides reliable smoke detection in HVAC duct applications with wide operating ranges and advanced false alarm immunity. Its pivoting housing and plug in sensor design simplify installation, testing, and maintenance across square, rectangular, and round duct systems. 4 wire photoelectric duct smoke