The Extech 445715 Big Digit Hygro-Thermometer with an extendable probe is a versatile device designed for accurate measurement of humidity and temperature. This hygro-thermometer features an extendable probe with an 18-inch cable, allowing you to access hard-to-reach areas or monitor remote locations.

The Extech 445715 is capable of measuring humidity in the range of 10% to 99% RH and temperature in the range of 14 to 140 degrees Fahrenheit (-10 to 60 degrees Celsius). With an accuracy of ±4% RH and ±1 degree Celsius (1.8 degrees Fahrenheit), this hygro-thermometer provides reliable and precise readings for both humidity and temperature measurements.

This meter is equipped with maximum, minimum, and reset functions, allowing you to track and record the highest and lowest readings for both humidity and temperature. This feature is useful for monitoring fluctuations over time and identifying critical points or trends in the recorded values.

Additionally, the Extech 445715 includes a rear calibration adjustment post with optional RH calibration bottles. This allows you to calibrate the hygro-thermometer for optimal accuracy, ensuring that your measurements are aligned with standard reference points.

The extendable probe provides flexibility in accessing areas that are not easily reachable by other devices. This is particularly useful in applications where precise monitoring of temperature and humidity is required in confined or remote locations.