Product_description: ['IC Realtime DVR-MAX508D 8-Channel Tribid 1.5U Standalone DVR, Embedded Processor, Embedded LINUX Operating System, Resolution 1920x1080, 16 Channel Alarm Input, 6 Channel Relay Output<br><br> Affordable, small form factor Analog recorder for residential and small office use. The MAX series of DVRs is a compact digital video recorder available in 4, 8, and 16 channel offerings. Due to its small size, the MAX series DVR is perfect for installation on a desktop, or a rack mounted shelf.<br><br> Key Features:<br> - Tribrid: Supports Analog, HDAVS (720P), and 2 (1080P) IPCs<br> - H.264 dual-stream video compression<br> - Support 4 SATA HDDs up to 24TB, 1 eSATA, 3 USB2.0<br><br> Specifications:<br> - Main Processor: Embedded processor<br> - Operating System: Embedded LINUX<br> - Video Input: 8 channel, BNC<br> - Audio Input: 4 channel, BNC<br> - Output: 1 channel, BNC<br> - Two-way Talk: 1 channel Input, 1 channel Output BNC<br> - Interface: 1 HDMI, 1 VGA, & 1 TV<br> - Resolution: 1920x1080, 1280x1024, 1280x720, 1024x768<br> - Display Split: 1/4/8/9<br> - Video/Audio Compression: H.264 / G.711<br> - Bit Rate: 20 to 4096Kb/s<br> - Video Detection: Motion Detection, MD Zones: 396 (22x18), Video Loss, & Camera Blank<br> - Alarm Input: 8 channel<br> - Relay Output: 6 channel<br> - Sync Playback: 1/4/9<br> - Backup Mode: USB Device / Network / eSATA Device<br> - Ethernet: RJ-45 port (10/100M/1000M)<br> - Max. User Access: 128 users<br> - RS232: 1 port, For PC communication & Keyboard<br> - RS485: 1 port RS485 for PTZ control<br> - Power Supply: AC100 to 240V, 50/60Hz<br> - Power Consumption: 40W (w/o HDD)<br> - Dimensions (WxDxH): 1.5U, 17.3" x 16.38" x 2.6"<br>