Curious how reliable the other reviews are. Or maybe my two yellow blocks really are lemons. Opened the package upon receipt. Two instruments and different readings for temperature and humidity, but in one package. I placed both blocks on a table with a digital block and checked them after a few hours. Still different and unlike a digital device. Put three devices in my fridge at dinner. In the morning both gauges are still unequal and 5-10F difference with digital thermometer and fridge digital gauge. Both the refrigerator digital block and the digital block placed in the refrigerator are read in the same way. week later. I placed each thermometer with a digital block. For both devices, the difference is 5-10 F. Slow adaptation. For real? I have a sauna with a thermometer/humidity indicator. True, they are several times more expensive and range from 32F - 220F. But not slowly and accurately. Also note; I have a commercial non-contact infrared thermometer. It checks all the digital temperature readings and shows a difference of 5-10 F. We send them back. If only the 1F variant would be acceptable. Not even close.
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