Flexibility to install a surveillance hard drive of your choice with this hybrid NVR DVR without hard drive. 16TB storage capacity and compatible with WD Purple, Toshiba and Seagate surveillance hard drives. External hard drives are not suitable for use with TIGERSECU systems. Receive instant mobile and email alerts when activity is detected. Remotely viewing on iOS and Android mobile devices, and desktop on Mac and Windows (Chrome, Edge browsers) via the Tuya Smart app, with no contract or monthly fees. This 5-megapixel video surveillance recording system is the highest resolution in our range and 2.4x better than 1080p Full HD. This non-PoE NVR does not have PoE ports, and requires an external PoE switch (sold separately) to support select PoE cameras. Compatible with specific models of IP cameras and most BNC cameras (HD-TVI, AHD, CVI and CVBS (D1), and RS 485 PTZ cameras. This does not work with SDI cameras. Contact TIGERSECU's Help Desk to check compatibility prior to purchase.