Requires Ooma Telo internet home phone service (sold separately) Monitors movement in your home, and sends real time email and text message alerts to your smartphone wherever you are When suspicious activity is detected, Ooma alerts you and gives you the option to trigger a 911 call Download the free Ooma Home Security app to check in on your home wherever you are, manage and configure sensors, and set alerts (available for iOS and Android) Easy wireless installation makes it easy to mount this sensor on the wall or anywhere in your home with the included stand Combine with the Ooma Door/Window and Water sensor for complete home monitoring