This is such a great addition to our Xfinity Home Security System! Very easy to set up. Take out of box, remove a small screw and plug in battery. Chat with Xfinity to get technician code and then follow the instructions that come with the product to add to your system. Would highly recommend this to anyone who wants to extend the signal to sensors that are far away from the touchscreen and or add additional siren power to an alarm. The system status indicator light is a bonus, and the unit also has a flashing strobe in the event of an alarm. Great for adding to the garage to extend the sound of the alarm and add an additional detractor of a flashing strobe!