How Can You Tell If a Camera Is For Outdoors?

Take my M3007-PV or Lee's M3006-V Axis dome camera:

They have aluminum bodies, screw down seals and a plugged cable tail. They also come with a V in their model number. I bought mine for a courtyard overview.

Being a moron, I didn't even consider that it might not be an outdoor camera: it felt and looked more substantial than other units I have which definitely are outdoor cameras. So onto the wall and into elements it went, without the unit putting up the slightest protest. Tough guy.

Now after several months of heinous camera abuse, I came to realize after reading Lee's thread that it is an indoor only unit.

Reading the spec sheet initially would have helped, it's rated at a mere IP42. But I don't see anything that says indoor only. I assume you can use some combination of the IP and operating conditions to determine whether it was or not.

But what does the IP have to be at a minimum. And the temperature/humidity range? Or can you not tell for sure just by looking at the spec sheet?

Thoughts, formulas?

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