Please Note: SC07 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 SC07-W. For Wi-Fi functionality, look for SC07-WX or SC07-MR | 2-in-1 Protection: The combination smoke and CO detector detects both smoke and carbon monoxide faster and more accurately using a photoelectric smoke sensor and an electrochemical CO sensor | 10-Year Battery: The fire and CO alarm is built with a sealed lithium battery that provides 10 years of continuous power, saving you from changing batteries and power outage | Combination Alarm with CO Readings: The informative LCD will show you the battery level and real-time CO levels in PPM (parts per million) | Simple Installation: Requires no rewiring; easy to mount this smoke and carbon monoxide alarm on any wall or ceiling with the included mounting bracket, screws, and anchor plugs | Easy Installation with Quality: X-Sense smoke carbon monoxide alarm combo requires no rewiring; easy to mount on any wall or ceiling without an electrician; all X-Sense carbon monoxide alarm and smoke alarm are rigorously tested to meet UL 217 and UL 2034 safety standards; comes with a lifetime customer support