ANNKE 12MP UHD 8CH / 16CH PoE NVR Video Recorder. It records longer videos and saves up to 75% storage space than H.264 coding, providing a smooth 12MP stream without using all the data. This NVR not only can detect objects crossing line uni- or bi-directionally, but also detect objects whether intruding into the defined zones, crossing into or out of the drawn regions.