Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Disappointing hot weather performance
Review: I bought this timer over others, the day before yesterday because of its ability to water on odd days. However, I have it attached below my south facing house wall faucet which is in direct sunlight for the majority of the day. I discovered the first day that the display became jumbled and the controls became inoperative when the unit had been in the sun for a modest period of time. Today, the unit was completely inoperative and required that I cool it down with hose water before it "came back on line." Worse, it had lost its time even though it didn't loose either program I'd stored. So, even if it did come to function again over night, it wouldn't know what time it really was! The manual gives no indication that the unit will not operate reliably at high temperatures although it does say it'll fracture if frozen. The manual lists no placement restrictions or options to avoid unit malfunction at higher temperatures.
