Universal Security Instruments MDSCN111 4-in-1 IoPhic Smoke, Fire, CO and Natural Gas Alarm (4 Pack)
4-in-1 Smart Alarm - 120-Volt AC/DC Wired-In Installation Plus Battery Backup * Protects Against Smoke, Fire, Carbon Monoxide and Natural Gas * IoPhic Microprocessor Intelligence Virtually Eliminate Nuisance Alarms * IoPhic Responds 87 Percent Faster Than Conventional Alarms to Slow Smoldering Fires * Interconnect able With Up To 24 Compatible Devices