12 Pack Mini Small Digital Hygrometer Thermometer Indoor Temperature and Humidity Meter Gauge with Temp Humidity Sensor Monitor Fahrenheit (℉) for Jars,Home,Room

These nifty little gadgets seem to work perfectly and provide us with the info we absolutely need to closely monitor, properly store and maintain the potency of many, many jars of delicate herbal plant product grown last summer. It’s March 2023 and they’re still working.They are tiny, easily fit on top of the herbs in quart mason jars and the display, on such a small instrument, is still large enough to Very easily read.And since All 36, stored in jars in the same location, have consistent readings I believe they are indeed accurately displaying temperature and humidity in each jar. We check them at least twice daily.We are pleased with this product and intend to order more. They Work and are very reasonably priced. I highly recommend this product.

Bought these to replace another brand I bought that was not at all accurate. These were all dead on for temperature and within +/- 2% on humidity from one another. Very happy with these. Large numbers are very easy to read and they update very frequently to keep most accurate display.

Not only were all the batteries dead which makes it not worth it because you have to buy that many batteries, but there was variations that were off so I just found the best handful that was close and used them after checking them and make sure they were calibrated... UPDATE: After my one star rating because of dead batteries they offered a refund in full. I gave a four-star rating because they stand behind their product and are willing to make things right. In today's world that's a major Plus. Be reached out to me in less than 24 hours.

They arrived fast and work great.

I love that these have big numbers even though they are tiny plus price is good enough until I can put one at each end of the aquarium as well as one in the middle so I know what the temperature is in each zone