While there is no single official product with this exact name, it combines terminology from two distinct technical fields: 1. NVR (Network Video Recorder)
In surveillance hardware, letters like "B" often denote a hardware revision code or a specific sub-model with minor hardware differences (e.g., a different brand of memory chip). NvR 4 B GCamP 7z
A "4-channel" NVR can support and record up to four simultaneous camera feeds. While there is no single official product with