: These units use Wi-Fi for data but must be plugged into an AC outlet for power. They offer 24/7 continuous recording because they aren't limited by battery life.
: Uses a microSD card or a central Hub (NVR). This often has no monthly fees . buy wireless camera system
: Uploads footage to the internet. This is convenient but usually requires a paid subscription (e.g., Ring, Arlo, Nest). : These units use Wi-Fi for data but