Wireless Security Camera System, CANAVIS 4CH 960p Video Surveillance NVR System 1280x720 1.0MP WiFi Bullet IP Camera with Night Vision, 1TB Hard Drive Pre-Installed [PRE-INSTALLED HDD] You will get this 4 channel home security cameras system with 1tb pre-installed hard drive, then you can set up recording on your NVR system directly [WIRELESS CONNECTION] There are two antennas and high performance built-in router in the NVR system, you won't need to connect your NVR unit box with cameras via video cable. Our NVR ensures reliable and stable wireless connection with cameras for up to 1000ft in an open area and up to 350ft if there are any obstacles [PLUG AND PLAY] For our wireless system, you dont need to connect the camera to the system within 350ft, but please be noted that each camera must be plugged into outlet to get a power, or it cant work because they are not cameras with solar model. Video will appear after connecting NVR with your monitor, and plug power into cameras and NVR [MOTION DETECTION] Choose channels for recording, you will be available to receive e-mail alerts when motion detection alarm triggered. If you need to get a remote view on your phone, please make sure that NVR is connected with ethernet cable and IP address is valid first, then download our app Danale [RECORD AND PLAYBACK] Setup recording settings on your network video recorder and make sure that the disk is connected and runs normally, choose channels and record type and you will be available to playback the recorded video on your NVR system, or on your phone app if your NVR status is online