X-Sense Smoke Detector Carbon Monoxide Detector Combo, 10-Year Battery Smoke Detector with Display, 5-PackBrand: X Sense Features: Please Note: SC01 is a basic standalone unit; it does not support wireless interconnection, does not have Wi Fi, and cannot be used with a base station; for interconnection, search for SC01 W 10 Year Sealed Battery (Not AC Hardwired): Contains a long life lithium battery that powers the device for its entire 10 year life 2 in 1 Protection: This combination detector protects your family against two dangers both smoke and carbon