TM-183 Temperature / Humidity Meter is the perfect piece of equipment for industrial applications, laboratory and other types of work locations, because of its highly accurate sensor chip that measures relative humidity and temperature. For easy viewing the TM-183 has a dual display of temperature and humidity, with selectable temperature scales (°C / °F). Hold can be used on both temperature and humidity readings simultaneously, with both also giving hold Maximum, Minimum and Average readings with time marks simultaneously. Up to 200 readings can be stored.