The cameras connect to the NVR's own WiFi so the system works standalone regardless whether you have Internet service or not.
Connecting the NVR to your WiFi will enable you to access the cameras remotely on iPhone, iPad, Android phones, tablets, PC and Mac, no matter where you are and when.
* With a high-gain microphone and speaker inside, the cameras allows you to view, hear and talk from your mobiles. If you turn on the siren, the cameras will let out a siren when a person is detected.
* You can add a SATA hard disk with capacity up to 6TB to keep record of past months.