I’m sure rj45s were never intended for exterior use. All those delicate little contacts in close-packed channels perfect for concentrating moisture and dirt.
Sorry to jump in here but, about the RJ45 burnout. I have had 3 poe plus cameras (that have been up a couple years) have chernobyl incidents only on the camera ends. So, my question is, dielectric grease or not? I've read about it causing issues. All 3 connections were the weather-sealed ones and of course installed outside. All cameras are Dahua but don't think that matters. I believe it is moisture intrusion but figured I'd see what you think.
One of my fails was at the beach, so yeah, humidity. But the other was in the San Fernando Valley, dry as it gets without going to te desert. But we get three rainy months, and that’s enough to kill an rj45 in a couple of years, even inside a housing.
Re: dielectric.
I gobbed it on with the first cable I used for the Color 4k. Seemed ok.
2nd cable run for same camera I didn’t add anymore and left a light residual coating on the connection.
Had problems with the 1st cable after 1 winter. Giving me fits ….
I somehow stripped 1” off the jacket of the cat5 during the cable pulling and exposed a bit of copper about midway in the run. That’s what screwed up my connection. Coincidentally right over a gopher hole. Not sure who to blame.