The D’Addario Planet Waves Humidity and Temperature Sensor is a precision instrument designed to digitally monitor relative humidity and temperature levels, ensuring optimal storage conditions for musical instruments. It accurately measures relative humidity from under 20% to 99% and temperature in either Fahrenheit or Celsius from -32 to 122 degrees. The device features a programmable set point and a memory function that logs the date and time of the highest and lowest readings. This feature helps musicians and instrument caretakers maintain ideal environmental conditions to preserve their instruments’ quality and longevity.
Product Highlights
- Digitally measures relative humidity from 20% to 99% for optimal instrument care
- Displays temperature in Fahrenheit or Celsius, ranging from -32 to 122 degrees
- Memory function records the highest and lowest temperature and humidity levels with date and time
- Perfect for guitar, violin, and other instrument owners to monitor storage environments




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