The SCD-AP969632SU. This is truly one of the best 32 Channel DVR's on the market. It incorporates real-time recording at an astonishing 960 frames per second and incredible recording quality of up to a D-1 resolution. It includes a 1 Tera Sata HDD with the capability of up to 4 TB not to mention the external HDD’s that can be added to this DVR. A super fast 1 Gig of ram and a 18" server rack with key to secure on server shelves. High Quality Digital Video Image 960 x 480. It also includes the ability to add 32 audio sources to listen to live audio. Specs are as follows: HDD/RAM 1 Tera HDD / 1Gb RAM Operating System Windows XP Camera Input 32 CH(BNC TYPE), NTSC/PAL Audio 32 CH Video output PC Monitor & Analog Monitor Screen Division 1, 4, 6, 8, 9, 10, 13, 16, 25, 33 Display speed Max 960 fps Recording speed 360x240: Max 720 fps 720X240: Max 480 fps 720x480: Max 240 fps Resolution 352 x 240, 720 X 240, 720 x 480 (Resolution setting by each camera) Compression Type MPEG 4 Compressed File Size 352X240: 1~5 kb, 704X240: 2~10 kb, 704X480 : 4~20 kb Recording Mode Continuous / Motion Detect / Sensor / Scheduled / Sensor& Motion Detect Simultaneously Recording Schedule Scheduling recording mode by each camera, a day of the week, and time. Recording speed setup by each camera Sensor Input & Relay Output Sensor 16ch / Relay 16ch PTZ control & Port PAN / TILT / ZOOM / FOCUS / AUX Control / LIGHT Control /AUTO PANINIG /IRIS / PRESET, RS-232C / RS-422 (RS-485) communication LAN/Modem 10/100 BASE TX ETHERNET / MODEM Advanced additional functions Live Snapshot, Motion Search, Event Log Viewer, Video POP-UP, E-MAIL notification Remote Control Remote Pan/ Tilt/ Zoom/ Focus/ Light Control/Iris Control/ Auto Panning/ Preset Control Remote Emergency Recording, Remote Relay Output Control, Remote Setting Remote transmission Real-time surveillance (Live) with remote playback & file back up, (Triple on Remote) Remote notification of events and automatic remote transmission of the alarm activator image Power AC100~120V 2A / AC 200~240V, 50/60Hz