SYSTEM SENSOR System Sensor D4120 4-Wire Photoelectric Low-Flow Duct Smoke Detector 24VDC / 120VAC Replaces DH100ACDCLP

System Sensor D4120 4-Wire Duct Smoke Detector, 4-Wire, Photoelectric, Low-Flow (24/120V), D4120 | Supplyhouse.Com

SYSTEM SENSOR Duct Smoke Detector, Photoelectric, Universal, Air Velocity (FPM) 100 To 4000, 2 1/2 in Depth, D4120

System Sensor D4120W Duct Smoke Detector (24/120V), D4120W | Supplyhouse.Com

System Sensor D4S 4-Wire Duct Smoke Detector, Photoelectric, Sensor Only, D4S | Supplyhouse.Com

SYSTEM SENSOR D4120W Watertight 4-Wire Photoelectric Duct Smoke Detector, 24VDC/120VAC, Reliable Smoke Detection, Watertight Enclosure

System Sensor D4120W 4-Wire Photoelectric Duct Smoke Detector, Watertight

System Sensor D4120 - Smoke Detector - Duct Smoke Detector,

SYSTEM SENSOR D4S Innovairflex Duct Smoke Detector, Photoelectric Detection, For Commercial & Industrial Ducts

System Sensor DH400OE-1 Weatherproof Duct Smoke Detector Enclosure

System Sensor D4120W - Smoke Detector - Duct Smoke Detector,

System Sensor D4120 Photoelectric Duct Smoke

System Sensor / 2-Wire Duct Smoke Detector / D2 / Replaces Model

System Sensor Photoelectric, Duct Smoke Detector: Universal, 2 1/2

System Sensor D4120 4-Wire Photoelectric Low-Flow Duct Smoke Detector

System Sensor D4120 Duct Smoke Detector 4 Wire

System Sensor D4120 4-Wire Photoelectric Duct Smoke Detector

System Sensor Duct Smoke Detector 120V Ac/24V Ac/Dc | Sound Alert |