Gas/Smoke Detection, 24Vac/dc or 120Vac Power Supply, 4-Wire Photoelectric Low-Flow Duct Smoke Detector with two DPDT relay contacts and Test/Reset button

Gas/Smoke Detection, 24Vac/dc or 120Vac Power Supply, 4-Wire Photoelectric Low-Flow Duct Smoke Detector with two DPDT relay contacts, Test/Reset button, and NEMA 4 Watertight Enclosure

Gas/Smoke Detection, 24Vac/dc or 120Vac Power Supply, 4-Wire Photoelectric Low-Flow Duct Smoke Detector Power Board Component Only

Gas/Smoke Detection, Replacement Clear Cover for Power Board Component of D4120 Duct Smoke Detector

Gas/Smoke Detection, 4-Wire Photoelectric Low-Flow Duct Smoke Detector Sensor Component Only

OEM DUCT SENSOR, BOARD ONLY BP

TEST COIL

24/120VAC/DC ION DUCT DETECTOR

INNOVAIR 4-WIRE PHOTO DUCT DET

24VAC/DC,120/220VAC DUCT DET