REVO"s unique all in one desktop is great for home or small business, yet still packs the power of a full, professional security surveillance system that REVO has become known for. Complete with a 500GB HDD, the system boasts REVO"s new EZLINK technology for easy networking through your router. The system can even be set to email you a status update to ensure you that REVO is doing its job and all cameras are recording as specified. This system is a great way to upgrade a wireless observation system into a complete wireless video surveillance system. This particular system comes packed with 4 wireless cameras. Broadcasting 600TVL of clear, high resolution video, this is the solution for adding a camera to monitor an area where running standard cable is just not an option. Also great for monitoring children"s area"s/rooms where a permanent mount will not be necessary. For outdoor or indoor use, a 12v power adaptor to power camera is included and the receiver portion is ready to be plugged into one of REVO"s Quick Connect Ports and be powered directly from the DVR. Install is as easy as 1 2 3. With a 3.6mm lens, the camera can transmit up to 450FT in optimal conditions. 30 IR"s allow the camera to see up to 80FT in total darkness and is also audio capable. Transmitting real time (25fps) wireless video, the camera and audio can be monitored remotely using the free smartphone app REVO Mobile (system must be connected to internet). Convenient signal strength indicator and out of warning allows you to easily set up for the best signal. The DVR supports easy back up via USB port (easily extruding video clips to a thumb drive) or external hard disk drive. User can remotely view live images or search the recorded data via the internet or a mobile phone. The 10.5" LCD monitor/DVR is VESA compatible for wall mounting. REVO Advanced. Intelligent. Video Surveillance Systems.