internet

Do indoor Wi-Fi cameras working of your Internet need a SIM card to send live video footage to a phone?

Hi, I'm pretty new to CCTV, and have narrowed my selection of DVR's down to an NVR (with IP camera) technology for my property. However, probably stupid question but I'm gonna ask it anyway... If I'm out and my internet goes down (e.g. maliciously), then I won't receive any alerts, rendering...

Hi everyone, I need a little help in deciding. I am not sure what is best for my setup. I only have 10Mbps internet connection and I plan to install at least 7 cameras. I also want to be able to stream remotely and record locally, no cloud storage needed. My question for IP Cameras and NVR...