My son has frequent febrile seizures and I needed a fast and reliable thermometer. I bought this thermometer because I am an ER nurse and this is the brand we use at my hospital. I know it to be easy to use and very reliable. I would have given 5 stars if the scan button had been in the other side. It is on the side that contacts the skin, making it awkward to keep the device in contact with the skin while scanning. Other than that, I am very happy with this thermometer.