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I have a DSL modem with a minimum operating temperature of freezing. I might want to put it in an environment that tends to go below that for extended periods. It doesn't go very far below, like -10℃ (14℉), maybe more like -5℃ (23℉) at its coldest. So I want to know what could happen to this non-dirty-cheap bit of equipment if I do that.

My feeling is that you can't do much permanent damage to electronics with cold temperatures, but it might not work very well. Since it doesn't go far below freezing in this environment, it's also my feeling that the device will create it's own heat, which will eventually bring it up to its operating temperature. Since the only time the modem isn't operating is when I'm on vacation or the power is out, this will almost never be a problem.

PenguinLust
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So I want to know what could happen to this non-dirty-cheap bit of equipment if I do that.

The big fear is condensation and humidity. So if you are sure it will be on all the time, be sure it can operate in a way that will avoid ice forming or even having moisture leak in.

The other issue is components themselves including the case and circuit board. Depending on what materials are used, the sub-zero temperatures could warp or even break parts if they are prone to freeze shrinkage. Ditto with solder joints that might be weak; if they are frozen they might snap.

Now I don’t believe any of this would happen immediately. But might show signs of stress after months of exposure. It might be worth it to investigate different outdoor enclosures to see if they might provide a safer “home” for your DSL modem than simply taking it as-is an exposing it to the elements.

Giacomo1968
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