DVR or Digital Video Recorder
The DVR allows for cameras to be directly connected to the unit, as opposed to being connected to the network which is used on a NVR (Network Video Recorder). But, the unit can be connected to a network for remote viewing from anywhere in the world. Placing the cameras off your network allows for you to keep your bandwidth/internet speed where it’s at. If bandwidth isn’t an issue and you’re looking for the clearest picture possible, you might want to look into HD-SDI Camera Systems or IP Megapixel Camera Systems. DVR systems are a powerful solution that are well suited for business, government, and home surveillance systems.