Product review (4 stars): I suggest for best results for sunny areas that you cover or wrap ...
I have a full range of Acurite devices ranging from a weather station to this device. Regardless of comments, this device woks extremely well if placed out of the sun and heavy humidity and rain. I use them in free standing greenhouse growers and initially compare the reading against another temp/humidity reading device for calibration. They report the exact same readings as calibration device. I suggest for best results for sunny areas that you cover or wrap sensor in a white paper towel or handkerchief. Also hang the sensor to keep moisture from poling on it.

My only problem is the inability to switch frequencies on this device like you can on other Acurite models. Hence, I cannot use multiple devices in different greenhouses.