The DVR4TL4TB is a 4TB, 4 channel Triplex digital video recorder manufactured by Speco which can deliver covert camera operation which provides administrator control and enhanced security for all operators. The DVR4TL1-5TB digital video recorder comes equipped with a 2.0 USB port, separate camera input per audio channel, a digital 2 x 2 zoom, an on-screen multiple language menu, as well as an IR remote, rack ears, and automatic camera detection. The DVR4TL1-5TB digital video recorder also features programmable camera motion detection, recording priority, alarm functions, plus scheduling options, and a programmable call-monitoring/VGA output. This high quality Triplex digital video recorder is perfect for using where a security surveillance system requires monitoring from a distant location- it also comes easy to use and install for all operators