Protmex HT607 Temperature Humidity Meter High Precision Digital Hygrometer with Ambient, Relative Humidity, Dew Point, Wet Bulb Thermometer, Min/Max Hold, LCD Backlight with Cover Protector

We survey buildings for energy management purposes as part of out work. I purchased 2 of these and tested their accuracy against 4 other temperature/humidity devices that I have, one of which has been professionally calibrated. They were spot on to within 0.1 degrees centigrade. The humidity was also within 1-2% of the calibrated device. The price is good and they appear well made. With the proviso that I have not used them in the field yet, I am pleased with these devices.

Excellent product I usually use my fluke humidity meter but could not find it only to have left it on another job so this one did the job at the time , a point of reference the fluke I use when I got it back I put it up against the protmex HT607 just to see and to be honest there was very little in hardly nothing at all so yes for the money just buy it great little device well made and will last 👌👍

Simple to use and easy to understand humidity meter. Seems to be accurate. Size makes it easy to handle.

Useful. Use while room temperature to get the most accurate reading.

It does exactly what the makers say it does

Great product and perfect for the job

Excellence First class Does the job

Ordered this for a Job where I was worried about the Humidity in a room with a computer in there. Not a big fan of digging through the instructions if i can just Jab at a few buttons and fumble my way to success. This Item Delivers here. Pretty simple to use and gave me some good Data right from the Get Go. Nice fast update time = couple of reads a second. You can pause this, or have the unit display a highest/lowest reading. Got a great read of the situation. job done

Ottimo leggero e preciso molto pratico

todavia lo he usado poco pero lo medido es correcto y tiene muy buena calidad precio

It's largely a matter of faith as to whether any hygrometer is giving accurate readings. There are ways of calibrating them, but these aren't all that reliable for a variety of reasons, like the fact that calibrating at one humidity level doesn't guarantee accuracy at other humidity levels. That's due to the fact that errors are nonlinear (not always off by a constant amount). Errors can be small (or even zero) over some portion of the range and large at others. Most home calibration methods, like the salt method, calibrate at the high extreme of the range, when our concern may be for accuracy elsewhere in the range. That issue is a tough one to get around, but digital sensors seem to have gotten better. In any case, taking any value of relative humidity as the gospel truth is a questionable proposition. What I look for is patterns of change in displayed RH as the environment changes and, to some degree, concurrence among multiple indicators. That's where this unit seems to excel. It gives me a reading that tracks (notice I didn't say "agrees") with other devices I have and with changes in the environment, such as running the heat like crazy and/or running a humidifier. Also, repeat measurements are reasonably stable under unchanging conditions. So, the readings are reliable (notice I didn't say "accurate"). The various bits of information the unit provides are convenient. For example, the dew point is sometimes more informative than the RH. This unit displays that. To sum up, even though I have no certainty that the readings this hygrometer gives me are precisely accurate RH values, I think it does about as well as you can expect in a consumer-grade product. It's consistent, easy to use, easy to read, compact, and affordable. If you need more than that, then you probably should be looking at laboratory equipment rather than something like this hygrometer. I like it and recommend it for most uses outside of a laboratory. It might even be fine in a lab but I'd need further validation tests to know that. In the real world, at affordable prices, in a convenient form factor, I think this is pretty much as good as it gets.

I like the ability to turn on the back-light and leave on so can monitor for extended periods without have to reset. Temperature cupfates in seconds, humidity about a minute or a little more depending on how big a change. Temperature I found dead accurate when tested against other instruments. Humidity a bit off but very acceptable. Quality feel and clear display.

Erstaunlich präzise. Luftfeuchte ist plus minus 1 prozent daneben, Themperatur 1 grad. Wirklich gut.