As others have said, it seems to be 10 degrees off (82=72). Once you figure out how to compensate for this, you're good to go. The suction cups are also average (one sticks, the other doesn't), but the one that works seems to hold it in place. For the price, it's probably closer to 3.5 stars than 3, but such a large variance in temperature can definitely be an issue. Hope this review helped.
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