Cameras that need no power cable: EZVIZ battery cameras such as the CB2 and EB3, the EZVIZ CB5 and Tapo C610 solar cameras, IMOU AOV 4G pan-tilt cameras and GrandSecu solar models. Many run on a 4G SIM card, which suits farms, sites and gates that Wi-Fi does not reach.

Tip: mount the solar panel where it gets direct sun most of the day, and pick a 4G model if there is no Wi-Fi at the spot.