That is a very nice inexpensive little thermometer. It's specs however, do not rival that of a Thermapen. Thermapen's accuracy is +/-.72*F with .1* resolution and the readings settle ≤ 3 seconds to within 1°F. The DT400 does not specify resolution ( I will assume it is 1*) and is not as accurate. Perhaps a thermometer with the specifications of a thermapen is not required for brewing but in no way, shape or form does the DT400's specs rival a Thermapen.