【Plug & Play and Auto-Pair】The IP cameras have been pre-matched to the NVR prior to shipping. No need to run video cable, Actual Plug and Play, Just need to connect the NVR and IP cameras with Power Supply. (Cameras are not cover battery) Wireless Camera is different from Wire-free camera, the power cable is still required to get electricity for 24/ 7 surveillance purposes. Wireless means that there is no video cable between cameras and NVR, easy to install. | 【Motion Detection】Wireless surveillance camera system provide to minimize false alarms. Smart notifications with app alerts will be pushed to your smartphone via iPhone/ Android App when motion is detected. | 【One-Way Audio Function】Built-in the microphone, so you can not only view the video, but also clearly hear the people on phone app or monitor. Notice: There is no speaker in the camera, so you can't make conversation with people. | 【Mobile Remote Viewing】Connect the NVR to router then download free app "EseeCloud" into your Phone, Pad, or PC. You can remote access simultaneously on smart devices at any time, anywhere with Wi-Fi/ 2G/ 3G/ 4G. You will never miss out on a moment with remote and local playback, no matter where you are. | 【Infrared Clear Day Night Vision】Featuring 3.6mm LEDs with IR-CUT function, 65ft Night Vision range. The camera's infrared mode is automatically activated in low lighting conditions. It can clearly monitor everything even at night.