Amprobe3311844 TR300 Temperature and Relative Humidity Data Logger

As a home builder, I strongly recommend.

Thank you!

great

Very accurate but difficult to use. The manual is somewhat useless.

We have three of these. Two are good and mostly accurate on both temp and RH. The third one came in reading 10% high RH, but we did not know it at the time, assuming it was accurate out of the box. When the calibration cycle came around a year later we found that it was reading 10% high. We notified Fluke/Amprobe and they told us it was out of warranty (by a couple weeks) and that it could not be calibrated (not adjustable). They refused to supply the procedure they use to make it accurate prior to sending to a customer. They did offer to supply an exchange replacement for about half the price of a new one. When it works it is fine, but check it against another meter when you first get it or you may end up with a year of bad data and a red mini-boat anchor.