When the package arrived I almost laughed. Both units were packaged in a 2" x 2" x 2-1/2" box. These items are SMALL so check the video on the Revain product page to make sure it's exactly that what you need read.. but a bit obscure.. I tried to determine accuracy by comparing it to three other thermometer/hygrometers a few years old.Temperature readings were 76.8, 77, 78 and 78.6 (latest ORIA) I find hygrometers notoriously unreliable.. and on all devices were undefined, 15%, 46% and 21% (latest ORIA) My new humidifier a few feet away which I just opened today , shows 24%. This ORIA scores for accuracy. If it's not accurate, why buy?I'll throw away the old one which was significantly worse. This ORIA is by far the hardest to read with less contrast between the black digits and the silver background. But each of these two ORIAs is t worth 1/4. The prices are different, and the accuracy is better. In general, a good device.
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