First Alert 1039760 Explosive Gas/Carbon Monoxide Alarm, Digital Display, 85 dB, Alarm: Audio, Electrochemical Sensor Polyethylene Film the ability to share and

the ability to share and track entry codes and Auto-Lock with DoorSense®

The FastFix interface and the CENTROTEC system ensure fast bit changes

Effective for drilling on curved surfaces

includes weatherproof box

Installation Type: In-Wall

First Alert 1039760 Explosive Gas/Carbon Monoxide Alarm, Digital Display, 85 dB, Alarm: Audio, Electrochemical Sensor Polyethylene Film the ability to share andFirst Alert GCO1CN combination explosive gas and carbon monoxide alarm with backlit digital display. Featuring a backlit digital display, this explosive gas and CO detector plugs into any AC outlet with no additional mounting hardware needed.