4K POE CCTV Kits. 5MP POE CCTV Kits. 2MP POE CCTV Kits. High-Gain 5dBi Dual Antenna. The 5dBi dual antenna can effectively enhance wall penetration and anti-interference performance, providing strong and stable WiFi signal. This is an expandable WiFi camera system, it provides you the flexibility to extend additional cameras. You can add more 4pcs 3MP PT cameras. OTA Technology supports directly upgrading the NVR system through the server, one button to realize the program upgrade. This WiFi surveillance system runs on H. 265+ video format, a technology that can reduce up to 50% storage space and bandwidth resources. Connect the 12V 1A power adapter to the Camera. Connect the 12V 2A power adapter to the NVR. The NVR needs to be connected to the router via an ethernet cable. Download and install ZOSI Smart free app, register and log in, enjoy live view. Before sending back any return items, please contact with us for a correct return address. We will try our best to avoid any quality problem. We will reply you no later than 24 hours. Our customer service and tech support will do our best to offer you a proper solution. We appreciate your business greatly. If you are satisfiated with our products and service, please leave some feedback for us. Your recognition will make us more confident to develop our business and serve you better. Your satisfaction, our pursuit.