Note This is a batteryoperated, wireless interconnected combination alarm powered by a replaceable lithium battery not AC hardwired App Alerts With the alarm setup in the app, youll get an instant alert when it is triggered, and the alarm and base station will both sound; youll also get handy alerts for low battery, faults, test results, and more All Alarms Sound As One All Link Pro alarms connected to the base station will sound together if any one of them is triggered, ensuring everyone hears the alarm and can react quickly; the Link Pro series includes SC07MRXP0AMR combination alarm, XS01MXS0BMR smoke alarm, XC01M carbon monoxide alarm, and XH02M heat alarm App TestSilence Test or silence your alarms with just a tap in the app; no need to fetch a ladder to reach the testsilence button Easily Locate the Source Alarm Name the alarm based where its located; when the alarms sound, tap the Locate button to silence the base station and other alarms, leaving only the triggered alarm active and displayed with room name Fast Fire Dispatch Within Just 3 Seconds By subscribing to the optional Protect Premium subscription plan which provides 247 professional monitoring service, when an alarm is triggered, you will receive a message from the monitoring center within 3 seconds to verify the emergency. After the emergency is verified, a fire truck will be dispatched immediately 10Year Combination Alarm Benefit from this smoke and carbon monoxide alarm for an entire decade; replace the battery just once thanks to the 5year CR123A battery Share the Convenience Let up to 12 people control the device via the XSense app, making it easy for everyone to receive notifications, test and silence devices, check the alarms status, and more