Review on 3MP Dual WiFi Audio Camera: xmartO AC Powered Home Security Camera System with 4X 3MP Wireless Outdoor Cameras - Ideal for Home and Business Surveillance (Dual WiFi in NVR, 1TB Hard Disk Version) by Tony Battaglia

This is a fantastic security system. It was really very easy to install and very convenient to set up. The picture quality is excellent, and since it has wireless cameras, you don't have to fiddle with cables from the NVR to the cameras. You only need to connect the camera to a power source, each has a power adapter with a long cable. The app lets you control your home remotely, and on this model you can install a separate microphone on each camera to record sound. Video quality is excellent, night vision is also excellent. This is indeed a very successful purchase: a professional system at an affordable price.