Hikvision Original English Version DS-7604NI-E1/4P NVR Linux Embedded Plug and Play PoE NVR for 4 HD Network Cameras 5 Megapixels Resolution Recording 4 Independent Interfaces 1 SATA The recording function of DS-7604NI-E1/4P Security System is also indicated to be pretty good by one of the reviewers as in order to save up space, it only records when it spots something optimally fishy. Negative remarks pertain to its low quality of zoom and limited area covered at night time, making it useless to identify faces in the case of an intrusion. Moreover, the cameras often come faulty, as complained by another reviewer, stating that they might be defective on the grounds of having always the night mode switched on. The video feed at night is also reported to go green by some other reviewers.
DS-7604NI-E1/4P Embedded NVR is based on dedicated hardware to provide the best functionality, it has embedded Linux OS, including video management software. The DS-7604NI-E1/4P Embedded NVR has reliable, rich interface, exclusive for video surveillance, good interoperability, and low-cost advantages. However, embedded NVR can’t allow users to change the OS and software. The producer may release new firmware, allowing users to upgrade or － the firmware to fix bugs or support new -based NVR based on common PC, can be installed with embedded Linux OS or Windows OS, it’s a PC structure, with flexible and scalable advantages, less development on hardware design, good interoperability. However, the system may have few interface, poor hardware integration, poor stability. VMS based NVR also uses the regular PC as the hardware, it usually installed with Windows OS, users can buy the VMS from different developers, however, VMS may encounter compatibility issue.
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