Review on 📷 Hiseeu Wireless Security Camera System: 2K Resolution, Two Way Audio, 1TB Hard Drive, IP66 Waterproof, Motion Alert, Mobile & PC Remote, Plug & Play - 24/7 Motion Recording by Richard Turner

This is a great option if you're looking for something that's quick, cheap, and easy to install. I had 4 cameras and an NVR that worked for 2-3 hours and everything went smoothly. If you decide to buy this device, make sure to update the NVR yourself and install the latest phone app. This seems to have solved any latency and sync issues the phone app has with the stock NVR firmware. Each camera has a latency of 2-3ms wireless (which is normal). So if you need <1ms real-time response time, I would recommend using the onboard Ethernet port. Each camera has a reset button next to the camera and an Ethernet port for wired installation. The power adapter for the camera is a 12V 1A cylindrical plug, and if something happens to one of the plugs, it can be easily replaced. The power supplies are also not waterproof and require some sort of inner cover or outer socket cover. Will definitely be buying some extra cameras to get all 8 it can do now as I can see how clear the 4 built in cameras are.