System Sensor D4120A 4-Wire Photoelectric Duct Smoke Detector, 24VDC/120VAC
$200.00
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System Sensor D4120A 4-Wire Photoelectric Duct Smoke Detector, 24VDC/120VAC
$200.00
The System Sensor D4120 is a 4-wire duct smoke detector designed to monitor air ducts in HVAC systems for early smoke detection. Ideal for commercial, industrial, and institutional buildings requiring reliable, code-compliant air duct smoke detection.