Other wireless systems require additional USB DVR, but ours is the latest BUILT-IN DVR RECEIVERS. Also, unlike other systems that may have quad viewing, our system offers quad viewing AND the ability to record all 4 cameras at the same time!! Other systems which use an older model of the USB DVR allow you to only record a single camera at a time or have a delay in between quad view. Our BUILT-IN DVR RECEIVER also supports 2 audio channels while other systems only provide a single audio channel.
NOW YOU CAN WATCH AND RECORD ALL 4 CAMERAS IN REAL TIME!!!