[4K HD Image+ Wide View Angle 121°+ WDR Function ] Ultra HD Resolution 8MP/4K .2.8mm Lens, Field of View (H): 112.9° (V): 59.1° (D): 121.2°. Wider view angle 121° to enlarge surveillance area and AI Function Wide Dynamic Range to create and capture a balance and finest image no matter in a environment with low or exposure light [3TB HDD 7/24 Record + Smart Playback ] Various Record Mode: ①Regular 7/24/365 Mode ②Motion Detection Record. Specific recording time can be chosen and various Playback Modes like Sync Playback (4 cams at most at a time)/Motion Detection Playback /Common Playback for camera owners to track back some vital information [ Sturdy Metal Housing & IP 67 Waterproof ] Stable and Sturdy Metal Housing provides with a last-long using experience, rather than plastic housing (Fragile and Easily-broken) Higher Standard of IP 67 Waterproof can withstand changeable environment [ Instant Motion Alerts on Free APP ] We can be alerted by receiving APP push notification on mobile phone once cameras detects human/vehicle moving [Can Set Alarm area to detect moving objects ] [4K 8MP 8 Ports PoE NVR 16CH Expandable ] This NVR Built-in 8 PoE Ports (4K 8MP), can power on 8 PoE cameras at the same time, with an extra PoE switch(not included) can extend up to 16 Channels, Max can take up to 16Pcs 4K 8MP Cameras [ Work with or without Internet ] For local TV monitor surveillance, the camera system can work without Internet ,but If you want to remote access via APP or PC Client Software, we need to connect the system to router to access to internet Enhance the security of your home or business with a reliable security camera system. This comprehensive solution provides round-the-clock monitoring and surveillance, allowing you to keep a watchful eye on your property from anywhere. With high-definition video capture, night vision capabilities, and motion detection alerts, you can rest assured that no suspicious activity will go unnoticed. The user-friendly interface and remote access via smartphone or computer make it easy to view live footage and review recordings. Protect what matters most with this state-of-the-art security camera system, designed to provide peace of mind and deter potential intruders. Customize the setup to suit your specific needs, and enjoy the convenience of a secure and well-protected environment.