This product is borderline dangerous because it is not calibrated. Indicates temperatures whimsical, child with a conventional thermometer showed 38.9 ° whereas with the latter it displays 35 ° !!! I did not buy this product for room temperature !! Despite having followed, read and reread the notice, nothing to do! I contact Visiomed course that meet the absent subscriber and you bill the call. Poor customer service. The product is good to throw for repayment exceeded ... I really recommend this product and believe me a contact thermometer is much safer for our temperature taken.