SMOKE DETECTOR,WATERTIGHT – D4120W

Smoke Detector, Watertight Photoelectric, 20 to 29 VDC, 24/120 VAC, 50 to 60 Hz, Duct Mounting, 5 in WD, 14.38 in LG, 2.5 in DP, -4 to 158 degF, Meets FM, MSFM, UL