FIRST ALERT 1046803 2-in-1 Smoke and Carbon Monoxide Alarm, Electrochemical, Photoelectric Sensor, 85 dB Cable Pulling Accessories UL approval type 21 class

UL approval type 21 class plenum rated

70 to 80 sq-ft

1-3/4 x 1-3/4 in Mesh Opening

3 in Flush ValveFeatures:

Diameter: 1/8 to 1/2

FIRST ALERT 1046803 2-in-1 Smoke and Carbon Monoxide Alarm, Electrochemical, Photoelectric Sensor, 85 dB Cable Pulling Accessories UL approval type 21 classFIRST ALERT 2 in 1 Smoke and Carbon Monoxide Alarm, Lithium Battery, Electrochemical, Photoelectric Sensor, Carbon Monoxide, Smoke Alarm, 85 dB Sound Level, Ceiling Wall Mounting, 5. 67 in Width, 1 in Height, 5. 67 in Depth, Additional Information: Premium Protection LevelFeatures: First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event