The system must also be connected to a mechanical doorbell. Otherwise, you have to use a 20 ohm/10 watt resistor which isn’t included in the package to be able to connect Zmodo to a power source. Once connected, you can enjoy on demand access to 720p live high definition video streaming at any time from your smartphone or tablet and even on your desktop. Of course, the camera is also built with IR LEDs so you can enjoy crystal clear images even in complete darkness!The camera is especially built for outdoor use, so you’ll never have to worry about it being damaged by heat, rain, humidity, or snow. With the Zmodo Beam WiFi Extender, you’ll be able to answer your door wherever you are even before opening it. 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.