Product Overview: The 16CH 4M Analog HD DVR, model HRD-1641, is a digital video recorder designed for security applications. It supports 16 channels with a maximum resolution of 4MP for AHD and 2MP for TVI and CVI inputs. The device offers a recording rate of up to 240/200 fps at 4MP and 480/400 fps at 1080p.

Display and Video: The DVR supports multiple resolutions including 2560x1440 and 1920x1080, with a live frame rate of 480/400 fps. It offers multi-screen display options and outputs via HDMI and VGA.

Performance: Operating on an embedded Linux system, the DVR uses H.264 compression. It supports various recording modes and event triggers such as video loss and motion detection. The device allows for pre- and post-alarm recording.

Network and Remote Access: The DVR supports IPv4 with a transmission speed of 15fps per channel at 4MP. It allows remote access via Android and iOS platforms, supporting up to 20 multicast users.

Storage: The device can accommodate up to two internal SATA HDDs with a maximum capacity of 12TB. It also supports external storage via e-SATA and USB.

Interface and Connectivity: The DVR includes multiple input/output options for video, audio, and alarms. It supports various protocols for network and PTZ control.

General Specifications: The device operates within a temperature range of 0°C to 40°C and a humidity range of 20% to 85%. It has dimensions of 370.0 x 44.0 x 320.0 mm and weighs approximately 2.96 kg with hard disks.

Language Support: The GUI and web browser support multiple languages, enhancing accessibility for international users.