Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Laughable
Review: PLEASE, save your money. I've had this thermometer for over a month and the closest it has come to being accurate is being about 20 degrees off (largest difference has been over 45 degrees). It seems to be strongly influenced by the glass temperature so if you have an older house with old windows it's completely worthless. I couldn't recommend this thermometer for outdoor use or any use where accuracy is even mildly important.
