This all in one combo WiFi range extender and smart home hub extends the range of a WiFi signal up to 656 feet and 300 Mbps so your entire home can be covered. Once set up, you can expect to be able to greet your guests by voice through the mobile app in your phone or set up a personalized recorded message for the visitors to hear. Zmodo Beam will also act as a smart home hub that can connect to other Zmodo accessories like door and window sensors which will alert you on your phone whenever motion is triggered. Installing the system is very easy. Simply replace your old doorbell push button then connect Vuebell with the existing wiring, without fixed voltages and polarity issues. Once installed, simply download the VueBell Smart Bell App from your iOS or Android device and you’re good to go!The system also allows for multi user sharing, which means the camera can be accessed by authorized viewers in a single time. And at night, the camera’s IR night vision function will automatically activate, with its IR LEDs that allow you to see everything in crystal clear detail even in total darkness. This door monitoring camera ensures that you’ll have the peace of mind even when you’re away from home. Not only will you be able to get a good view of your front door from your mobile device, you can also hear and talk to whoever’s at the door, no matter where you are. That’s all thanks to the system’s real time two way audio feature, with its built in microphone and speaker. The VueBell WiFi HD Camera Video Doorbell also comes built with a motion sensor technology called Smart Guard Function that triggers an alert and sends real time push notifications, along with a snapshot, to your smartphone or tablet.