Wireless Digital Home 4ch DVR Infrared Security Camera System with 7'' LED Monitor Support Motion Detecting and Video Storage for Warehoues Garage Backyard Surveillance CCTV This dvr security system is for baby activity monitor and yard security detecting for pet;Garage and Warehouse security Keeper. Four cameras without the wifi/network connection,easy connect, enough for every corners detecting.(Not suggest put it ourside without any cover,it's better for indoor) The digital wireless dvr security system,don't need internet,more safe to avoid hacker's network surveillance. One wire power cable to charge the four pcs of cameras and monitor to keep continuously work,don't include the battery. Supporting night version,catch every moment you want to and up to 32GB TF card to store pictures and audio. Take memory card out to your pc to review. The motion model, only record the activity to save the storage. The one-way intercom,monitor can hear the voice from cameras. Please attention: 1.the wireless is about the connection for monitor with camera, all the device need the cable to charge;The protection film on the screen can be peel off to make it more polished; 2.download the player software, if pc system can't support the video.Below link to download it:https://www.dropbox.com/s/av5o7ipv4ga6ygo/player%20software.rar?dl=0