Wireless means the cameras can automatically connect to the NVR wirelessly, but also require power supply all the time. TOGUARD Security Camera System supports wireless / wired connection. When the wireless signal cannot be covered, you can set up a wired network to transmit video. (If you want to use a wired connection, the Wifi camera needs to be connected to the router with Ethernet cable). Without internet, still can work, but only can view it on local monitor/TV. Wireless Surveillance System Provides for 24/ 7 Recording. TOGUARD Security Camera makes your life safe and monitor what matters most. HDD is not including. Wireless surveillance system is suitable for various occasions, such as houses, offices, shops, schools, enterprises, warehouses or other places. True Plug & Play. The wireless security camera and NVR have been auto-paired before packaging. Just connect the NVR and camera to the power supply and you can use the security camera right away. One-way Audio with one microphone, camera can record the sound. Connect the Router to NVR LAN port with Network cable provided. View live and recorded videos any time of the day from anywhere. Wall or Ceiling Mounting. The security camera can be set on the wall and ceiling, Just drill a hole in your wall and plug it into an indoor outlet. Adjust the angle during installation. The security camera system uses high-quality metal materials to effectively prevent rusting, which can be installed in almost any outdoor or indoor place. The 110° wide view angle and 1080P outdoor cameras help to get a sharper and larger image. The security camera system detects moving objects and triggers alerts when danger occurs. The security camera has 3.6 mm LED with IR-CUT function, 20 meters night vision range, the infrared mode will be activated automatically at dark light, it can clearly monitor everything even at night. IF there are too. 4 x 1080P Wireless Security Cameras. 4 x Power Adapter for Cameras. 4 x Screws for CCTV Cameras. 4 x Screws for Hard Disk Drive. 1 x 8-channel Recorder. 1 x Power Supply for Recorder. 1 x Network Cable. 1 x USB Mouse. 1 x User Manual.