PELCO Model S. No. Description DVR5104DVD-250 S72399 4 channel, 250 GB HDD with DVD-RW   DVR5104DVD-500 S72400 4 channel, 500 GB HDD with DVD-RW   DVR5108DVD-250 S72403 8 channel, 250 GB HDD with DVD-RW   DVR5104DVD-1000 S72398 4 channel, 1000 GB HDD with DVD-RW   DVR5108DVD-500 S72404 8 channel, 500 GB HDD with DVD-RW   DVR5116DVD-250 S72407 16 channel, 250 GB HDD with DVD-RW   DVR5116DVD-500 S72408 16 channel, 500 GB HDD with DVD-RW   DVR5108DVD-1000 S72402 8 channel, 1000 GB HDD with DVD-RW   DVR5116DVD-1000 S72406 16 channel, 1000 GB HDD with DVD-RW   DVR5104DVD-4000 S00000 4 channel, 4000 GB HDD with DVD-RW   DVR5108DVD-4000 S00000 8 channel, 4000 GB HDD with DVD-RW   DVR5116DVD-4000 S00000 16 channel, 4000 GB HDD with DVD-RW   The Pelco DVR5100 Digital Video Recorder Product Features: 4, 8 & 16 channel models Embedded Linux operating system MPEG-4 Compression Up to 4 CIF 704 x 576 resolution Record video at/up to 400 ips (PAL) at 4CIF Programmable Recording Resolution & Frame Rate per input Up to 1 TB internal Storage with EnduraStor Optimization Technology Continuous, Scheduled, Motion, &/or Alarm Recording Selectable on a per input basis User Interface Accessible from front panel controls, KBD5000, Remote Client for local or remote control, or USB Keyboard Audio Recording with 4 Audio Inputs & one Audio Output Low level Alarm Inputs per camera input Relay outputs 2 for 4 & 8 channel model & 4 for 16 channel model PTZ Control using Coaxitron, Pelco D or Pelco P protocols Powerful single button export Pelco Endura enabled, can operate stand-alone or as part of an Endura system