Display Specifications:
The SRD-894 supports 8-channel BNC video inputs compatible with 1080p/720p AHD cameras, and operates with both NTSC and PAL standards. It offers resolutions up to 1920 x 1080 for NTSC and PAL, with live frame rates of 240fps for NTSC and 200fps for PAL. Multi-screen display options include 1, 4, 7, 9, sequence, and PIP modes.

Performance:
The system runs on an embedded Linux OS and uses H.264 compression for recording. It supports various recording modes including manual, schedule, event, and time-lapse, with pre-alarm recording up to 30 seconds and post-alarm recording up to 6 hours. Event detection includes video loss, motion, alarm, and tampering.

Network and Remote Access:
The DVR supports IPv4 with a maximum bandwidth of 64Mbps and offers multiple transmission speed options. It supports up to 10 live unicast and 20 live multicast remote users, with protocol support for TCP/IP, DHCP, PPPoE, SMTP, NTP, HTTP, DDNS, RTP, RTSP, and SNMP. Monitoring is available via SmartViewer, Webviewer, and SSM (CMS), with smartphone support for Android and iOS.

Storage and Security:
The device can accommodate up to 4 internal SATA HDDs and 2 external e-SATA expansion bays. Backup is supported via USB with file formats including BU, EXE, and AVI. Security features include password protection for 1 admin and 10 user groups, and data authentication through watermarking.

Interface and Connectivity:
Video outputs include 1 VGA and 1 HDMI port, with audio support for 8-channel line-in and 1-channel line-out. Alarm inputs and outputs are available, with remote notification via email. Connectivity options include Ethernet, RS-232/RS-485 for PTZ control, and USB ports for peripheral support.

General Specifications:
The DVR operates on 100-240V AC power, with a maximum power consumption of 31.6W. It functions within a temperature range of 0°C to 40°C and humidity levels of 20% to 85% RH. The dimensions are 440 x 88 x 384.8 mm, and it supports multiple languages.

Key Features:
The SRD-894 is an 8-channel 1080p real-time DVR with a recording rate of up to 240/200fps. It features HDMI/VGA outputs, 8-channel audio inputs, support for up to 4 internal HDDs, and enhanced network bandwidth capabilities.