X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, Pack of 6

2-in-Protection: This combination detector protects against both smoke and carbon monoxideWireless Interconnection: When one alarm sounds, all alarms will go off10-year Sealed Battery: This wireless alarm features a 10-year lithium battery and will give a low battery warningTest/Silence Button: The single push of a button will either test or silence all units in the systemFull Home Coverage: Link up to 24 Link+ wireless smoke alarms, CO alarms, and combination alarms for maximum home protectionEasy to Install: This smoke and CO detector is easy to mount onto any wall or ceiling using the included accessories Model SC06-W Model XP01-W Model XS01-WR Model XC01-WR Model SC07-W RC01 (Remote Controller) Sensor Type Photoelectric & Electrochemical Photoelectric & Electrochemical Photoelectric Electrochemical Photoelectric & Electrochemical Detection Type Smoke & Carbon Monoxide Smoke & Carbon Monoxide Smoke Carbon Monoxide Smoke & Carbon Monoxide Power Source 10 Years Built-in Battery 7 Years Built-in Battery Replaceable Battery Replaceable Battery 10 Years Built-in Battery Replaceable Battery Low Battery Warning Digital Display Interconnection Compatible with Remote RC01 Item Size 5.7 x 2 in 5.7 x 2 in 3 x 1.9 in 5.3 x 2.5 x 0.6 in 5.7 x 2 in 3 x 1.6 x 0.5 in