Need a zwave leak sensor with wide temp operating range

I want to place a zwave leak sensor in my attic to watch for AC drain issues. The temperature in the attic ranges from 15 to 130 degrees Fahrenheit. The sensors that I have looked at have a range of 32 to 104. Thanks in advance for your help.

[matt (support)]

Not high tech, but would it be possible to add some type of shading structure so the utility box itself doesn't get direct sun?