Most popular, place and forget. The camera comes with a built-in recorder. Multi purpose usage including nanny watch & body worn system.
Wi-Fi cameras transmit video & audio directly to your wireless router. The video is recorded or viewed & recorded on your PC or via web. No interference & secure.
Wireless spy cameras will transmit the video signal to a nearby receiver (included) Then the receiver connects to any kind of recorder (VCR or DVR). Easy set up.
You will need to run a cable (video & power) to a recorder. Best solution for new construction buildings where walls are not completed. Most secure.