Digital Psychrometer Thermometer Hygrometer with Backlight, ERAY Temperature and Humidity Reader Meter Thermo-Hygrometer with Dew Point and Wet Bulb Temperature, 9V Battery Included(Yellow)

We use this meter to validate the humidity in our piano. It works great. We leave it right inside the piano to insure we have at least 40% humidity so the sound board does not crack. Great price for our needs.

I do hvac and this is accurate. Cheap way to get wet bulb and rh.

I work for a restoration company and needed a inexpensive meter for survey purposes and this one does a good job.the battery that it came with was dead but the meter works.pretty accurate but if you go to a new job where the humidity is trapped and over 90% it stops working it gets overwhelmed. Overall still good for the price

Takes humidity and temp as intended to for value. Use for air conditioning values

This meter works great. Simple to use, easy to read.

The unit seems rugged enough and the backlit display is fun to look at. Functionality holds potential, however, My unit has a bias as temperature reads 5 degrees F warmer than it actually is. That means the other data will be likely off as well. So As long as the bias in temperature is kept in mind and compensated for, the unit certainly has a use. It was dirt cheap after all. However, I'm not quite ready to give up the sling psychrometer just yet.

But glad I purchase it after much comparisons. Still working today and seems accurate data so far. Very handy to have just in case you see or smell something off in the basement or attic. I've had and used this now for over a year.Today when I write reviews I like to do so after several months or at the most when appropriate for the use/utility of the product up to a year of ownership and performance to inform other consumers like they informed me of my purchase--when I would be relying on their reviews for quality and useful products for our house and family. Just paying it forward. Amd this one is worth the price and quality!I bought this along with a pin moisture tester and infrared meter same year last year as new homeowners. This and those others are good to always have to test your household environment for safety and prevent costly repairs. Better to be informed and have data of science in order to be prepared. :-)

The data logger was received with a defective mini disc that contained the software for setup and use of the instrument. After contacting the vendor, I was able to receive a web link that allowed me to download the same image of the files that were on the disc. This worked much better and allowed full use of the device. 4 stars are given due to the issue with the disc and the vendor not having a way to provide the files via web link in the literature received with the unit.I will be using this logger to record the water pressure readings from a faucet at our house for monitoring changes in pressure over a several day period. The logger suits the job well since it has a settable scale and a resolution of 2 decimal places (e.g., 10 mV resolution). Connected to a pressure gauge, I will be able to record changes in pressure with 0.5 psi resolution, more than enough. And I can set and forget the reading for several days at a time and then plug the logger into my computer to graph the results.