D'Addario Planet Waves PW-HTS

Humidity and Temperature Sensor digitally indicates accurate relative humidity levels ranging from under 20% to 99%. The thermometer displays temperature in either fahrenheit or centigrade, ranging from -32 to 122 degrees. The unit includes a programmable set point as well as a memory feature that indicates the date and time of the highest and lowest temperature and humidity levels to which the instrument has been exposed..