Zmodo Wireless Surveillance 4CH Network Video Recorder 1TB HD CCTV System with 4 Wireless Day Night IP Security Cameras - A New Generation of Video Recorders - The Feature of Video Surveillance: Wireless surveillance system with Wireless IP Cameras, digital Signal and Network Transmission Perfect Wireless Solution: No video/audio cables are needed for this wireless outdoor security camera system, enjoy the wireless security system. Huge Cost Savings: Installation costs of the wireless cctv systems can be significantly lower than comparable analog based cabling installations Automatic Connection with IP Cameras: Once start the system, it will automatically begin searching for the IP Cameras. Up to four IP Cameras that first searched out will be added to the NVR automatically. Remote Viewing on PC & 3G Smart Phones; Super Convenient Control via IE Browser