【8CH 3MP WiFi Camera System】This is 8CH expandable camera system, it provides you the flexibility to extend additional cameras. You can add more 4pcs cameras. But only Support ZOSI IP Cameras. With 3MP HD Resolution Cameras, you can get a sharp and crisp image day or night with the camera's automatic IR-cut filter. Up to 80ft night vision. IP66 weatherproof housing, cameras can be used indoors and outdoors..【Motion Detection and Notification Alert】Be notified when there are unexpected movements. Smart notifications with image will be pushed to your smartphone via ZOSI Smart App. And you won't miss any moment with remote and local playback..【Remote Access anywhere anytime】Setup with free app and scan QR code to access real image on phone. Check in on your home or business wherever you have an internet connection. Free app for live view & Playback on smart devices with Wi-Fi or 2G/3G/4G anywhere anytime..【Built in 1TB security grade Hard Drive】Support Ultra-Long Continuous Recording and Backup By USB. NVR can be set to automatically overwrite the oldest internally stored footage or you can transfer those video files by USB to a memory stick or external hard drive..【Note】The cameras and the NVR require the power connection. They are not Battery Cameras.Wireless security cameras connect wirelessly to a NVR. They are designed for continuous recording, which requires them to be plugged in to a power source.