This thermometer didn't work. Like another reviewer wrote - it stays at 40-45 degrees all the time. I wish I could give the product a zero but Amazon 5 stars! The refund/return was so easy and Amazon even provides the shipping label so I don't have to pay to return it. I got free super saver shipping to begin with so I'm out $0. This is why Amazon rocks and I am a frequent customer. I rarely have any issues with AMazon purchases. I am a loyal customer because I know that when there is an issue, they make it right.