I had only my doubts that you get something useful for the price. Did it then but still ordered and tried. Because I need the thermometer for measuring temperatures in gaseous media should the sensor not be too thick so as not to react income. So far my expectations have been met for the price and the precision is also not objectionable. In liquid media the Thermoter reacts within seconds and in gaseous media in a tolerable range. Certainly you have to deal carefully with the device, since the plastic housing will not withstand too much. For the price a strong buy recommendation.