I have a switch on an Arizona west facing wall without protection from the hot sun (making it at least 125 to 130). The switch, installed by the landscaper (matching standard like the flip switch here: How do you weatherproof a light switch?) controls a small submersible pump operating the small water feature in our yard (low wattage, not dimmer adaptable). I want to automate the switch to turn it off at night, ideally with SmartThings. However, I have not found a smart switch or micro switch rated for that kind of temperature. Even if I re-piped it somewhere into the shade, I am still above the normal rating of 104F. Any suggestions?
Who cares where the smart switch is physically located? Not the smart switch. Put it somewhere sheltered.
If you also want manual control in that location, then select a smart-switch that's designed to retrofit into old-school 3-way switch circuits. It will expect a plain old "steam" switch as its "wired remote". Fit a plain old switch here, run a (probably /2) cable to the smart switch location, and there you go.