Dahua Technology Lite NVR2104-4KS2 network video recorder 1U Black

Dahua NVR2000-4KS2 is capable of transmitting 8MP image. It helps
to save up to 50% HDD and storage space with its H.265 decoding
technology compared with H.264.
Due to its cost-effective and easy-to-install design, this NVR is ideal for
a wide range of applications such as home safety, grocery, warehouse,
education, and financial institutions.
The NVR is compatible with numerous third-party devices making it
the perfect solution for surveillance systems that work independently
of video management system (VMS). It features an open architecture
that supports for multi-user access and is compatible with ONVIF 2.4
protocol, enabling interoperability with IP cameras.

4K Resolution
4K resolution is a revolutionary breakthrough in image processing
technology. 4K delivers four times the resolution of standard HDTV 1080p
cameras and offers superior picture quality and image details. 4K resolution
improves the clarity of a magnified scene to view or record crisp forensic
video from large areas.
High Efficiency Video Coding (H.265)
The H.265 (ITU-T VCEG) video compression standard offers double the
data compression ratio at the same level of video quality, or substantially
improved video quality at the same bit rate, as compared to older video
compression technologies. H.265 offers such impressive compression
by expanding the pattern comparison and difference-coding, improving
motion vector prediction and motion region merging, and incorporating an
additional filtering step called sample-adaptive offset filtering.
Automatic Network Replenishment (ANR) Technology
Network Video Recorders with the ANR function automatically store video
data on an IP camera SD card when the network is disconnected. After
recovery of the network, the NVR automatically retrieves the video data
stored on the camera.
Easy4ip
The Easy4ip app is available on the iOS App Store and Google Play. It makes
surveillance easy and simple, allowing you to remotely access NVR devices,
view live video, receive event push notifications, and search for recorded
videos from an iPhone, iPad, or Android phone at anytime from virtually
anywhere.