This cctv system need 12V 1A power supply to charge it! This cctv system has been paired successfully, if you want to add more than 4pcs cmaeras, you need to use the cable to pair camera and NVR. Hiseeu Audio Wireless Security Camera System Outdoor Wifi CCTV 10CH NVR W/HDD. This cctv system has been paired successfully, if you want to add more than 4pcs cmaeras. You need to use the cable to pair camera and NVR. 2K 3MP Super HD & 60 ft Night Vision. 1/3” CMOS sensor, digital WDR, ultra-clear 2K 3MP Super HD clarity regardless day or night. 4 powerful infrared&white LEDs deliver up to 60 ft/15 m night vision range. You may identify objects in any lighting condition. Get Notified of Person Detection. Armed with advanced AI-based human detection, this cam alerts you to true threats only. Listen and Talk in Real Time-2 Way Audio. Use two-way audio to respond to guests or warn off the unwanted from anywhere. Auto Pairing, Easy Connection. Power on the cameras and NVR and all is done! No wiring and no complex configuration needed. Pls note, this cctv system has been paired when pakcage in factory, if you want to add more than 4pcs cameras to this cctv system, you need to use the cable to pair camera with NVR. Expand up to 10pcs Cameras. This NVR is 10 channel NVR, it can be add up to 10pcs cameras. Hiseeu cameras protect your family every moment. This wireless system provides 24/7 non-stop recording even without network access. Plug the cameras & the NVR to the nearby outlets & all is done! For remote access & motion alerts, Internet is required. We regret that we can not be responsible for any wrong or undeliverable addresses. If you are satisfied with our product, please leave. Which means a lot to us, thanks in advance. We guarantee against any defective products.