(1)The cameras and the NVR require a power connection. They are not Battery Cameras. (2)Wireless security cameras mean the cameras connect wirelessly to an NVR. (3)Wireless security cameras are designed for continuous recording, which requires them to be plugged into a power source. See the night in Vivid Color. Turn on the integrated 2 spotlight for seeing color & clear images even in dark night. Enjoy full color images and video at night with built-in warm lights on. Record videos in 3MP super HD, and see more details of the pictures with a 90° viewing angle. Capture sharp and clear footage for minute details. Long-distance Infrared Night Vision. Built-in 4 infrared LEDs, support up to 100ft of ultra-long black and white night vision distance. 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. Listen and Talk in Real Time. Use two-way audio to respond to guests or warn off the unwanted from anywhere. Get Notified of Person Detection. Armed with advanced AI-based human detection, this cam alerts you to true threats only. Auto Pairing, Easy Connection. Power on the cameras and NVR and all is done! No wiring and no complex configuration needed. Dual Warning for True Threat. The system detects human and activates spotlight and siren alerts to send strangers running. ZOSI free Smart App/AVSS Client make it easy for you to get access and control to your cameras any time, anywhere, from any device. With total storage expandable up to 8TB, this complete NVR security system supports 24/7 non-stop recording of up to 8 cameras at the same time. By customizing motion zone and adjusting motion sensitivity, it can effectively reduce useless false. 265+ plus AVBR video coding compresses videl file sizes 50% more efficiently than H. 264, saving you lots of hard drive space. Equipped with an adjustable mounting bracket, the camera can be easily mounted on the ceiling or wall. Blanket Your Home with Reliable 24/7 WiFi Solution.