All three used days when I received them. One stopped working two days ago. tried the battery. Bought more batteries. nothing helped, the thermometer was made. Today the second one stopped working, I tried the same one. Change the batteries first with the supplied spare batteries and then with the new energizer. still does not work. This was my second purchase of these thermometers. the first 3 died in about 4 months. I understand they are cheap. would not recommend it to anyone. Save money. I would complain to the company but I think they know what they are selling. Another crap from China.
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