First Alert Carbon Monoxide Detector 120V With 9V Battery Backup

First Alert Carbon Monoxide Detector 120V with Battery Backup. This First Alert Hardwired Carbon Monoxide Alarm with Battery Back-up meets codes where CO alarms are required for new construction. Installation is seamless with the use of a quick plug-in power connector. Additional features such as a microprocessor that limits nuisance alarms and a single test/silence button add versatility to an already efficient carbon monoxide alarm. Electrochemical Carbon Monoxide Sensor - the most accurate sensor available as compared to other sensing technologies.

Features:
Quick Plug-In Power Connector.
120-volt AC Inter-Connectable.
Microprocessor Controlled for Fewer Nuisance Alarms.
Single Test/Silence Button.
Battery Drawer Lock.
Mounting Bracket Lock for Tamper Resistance.
Low Battery Warning 'Chirp'.
Missing Battery Tab.
Swing Open Battery Drawer.
Emits T3 Pattern.
10 Year Limited Warranty
Product Dimensions (LxWxH): 3.4 x 1.7 x 5 in.