Extech RH390 Hygro Thermometer Psychrometer

The Extech RH390 Precision Dual Display Hygro Thermometer Psychrometer is a specialized device designed to measure both humidity and temperature with precision. With a dual display feature, it provides real-time readings for humidity and temperature or other combinations like dew point and wet bulb, making it useful for a variety of applications. Consumer feedback on the Extech RH390 indicates a mixed reception, with some users appreciating its simplicity, as one reviewer noted, "We have the RH529B, a pretty simple unit." However, there are significant concerns regarding the accuracy and reliability of the thermometer, with users reporting issues such as faulty readings and suggesting, "the fix is don't use analog hygrometers or thermometers. They're nowhere near as accurate or precise as they should be." Given the feedback highlighting both its ease of use and concerns about reliability, potential buyers should weigh these factors carefully. While the Extech RH390 offers useful features for monitoring environmental conditions, it may not be the best choice for users requiring highly precise measurements.

Not for you? Check out our other rated Hygro Thermometers