The D'Addario Humidity & Temperature Sensor is a precision-designed hygrometer that digitally indicates accurate relative humidity levels ranging from low (under 20%) to 99%. Temperature is displayed in either Fahrenheit or Centigrade, ranging from -32°F to 122°F (-35°C to 50°C). The HTS includes a programmable set point, as well as a memory feature that indicates date/time of the highest & lowest temperature/humidity levels the instrument has been exposed to. An essential tool to monitor your instrument's environment.
 
Accurately displays temperature and humidity levels
Memory feature indicates recent high and low levels
Built in clock and calendar
Get one for each instrument case