【4K 8 Ports NVR Upgrade 16CH Expandable】This 4K 8-port NVR can expand up to 8 PoE cameras. If you additional purchase a PoE switch (not included), you can update to 16 channel system. It provides you with the flexibility to expand additional cameras. You can add more (ZOSI only) 8MP, 5MP or 3MP POE bullet heads or dome cameras. | 【IP66 Weatherproof & Night Vision】5MP weatherproof metal dome cameras are constructed with aluminum materials, making them suitable for both outdoor and indoor installations. With the camera's automatic IR-CUT filter, you can get a sharp and crisp image day or night. These cameras offer up to 80ft of night vision in total darkness and up to 130ft of night vision in ambient light. | 【Motion Detection & Instant alerts】Smart Instant notifications and email alerts will be pushed to your phone when the camera detects the human motion. You can also customize specific motion detection zones for each camera to minimize false alerts. | 【Plug & Play Simplify PoE installation】Our cameras feature power over Ethernet (PoE) technology, eliminating the need for a separate power cable. Simply connect the IP cameras to the NVR with a single cable that transmits both data and power. This not only simplifies the installation process but also reduces the risk of electric leakage. | 【24/7 Recording with 2TB Hard Drive & Live View Share】Our NVR comes with a built-in 2TB security-grade hard drive, providing reliable 24/7 recording. The NVR can be set to automatically overwrite the oldest internally stored footage or you can transfer video files to a memory stick or external hard drive via USB. Additionally, it supports multiple family members to remotely access, view and playback anytime, anywhere