I'm a fan of webcams for my property including inside the hangar. Not so much for security, I have a system for that, but in the hangar I just like to glance at the planes when traveling. I recently bought a 2 pack of wifi cams by Wyze. I prefer cams that use plug-in power and these do. My pirep is that they work great, the app to view them in 1080hd is free, they have free cloud recording, setup was super simple, have motion alerts, two way audio, and the two pack on Amazon Prime cost $47.00. Wifi webcams have come a long way and the prices have really dropped. These are way better than the ADT cams or the DVR hard-wired system I have elsewhere. Just an FYI from a happy customer.
https://www.amazon.com/Wyze-Indoor-Wireless-Detection-Assistant/dp/B076H3SRXG?th=1
https://www.amazon.com/Wyze-Indoor-Wireless-Detection-Assistant/dp/B076H3SRXG?th=1