Store return. Has been tried before returning, may contain minor scuff marks from handling. Unit has been tested and contains all necessary components. Replaces your door’s peephole with a 1080p HD video doorbell that enables you to see, hear, and speak to visitors from anywhere. -Get alerts on your phone, tablet, and PC when anyone knocks on your door, presses the doorbell button, or triggers the motion sensors. -Works with Alexa – let Alexa notify you when someone is at your door and see, hear, and talk to visitors with select Echo devices. -Adjustable Motion Detection lets you easily adjust the built-in motion sensors to focus on and detect what’s important to you.