Featuresr wifi doorbell connects to network via wifi router15 30mr mobile devices include smartphone or tablet could connect to the doorbellr after the visitor rings mobile devices coulde interact with doorbell via real time video and audio unlock take photos take videos and alarmr answer the doorbell by smartphone when someone press the doorbell unlock the door from your smartphone on appr don39t worry forget the your key you can open the door by your smartphoner the camera