12-Pack Small Digital Temperature Humidity Meters Gauge Indoor Thermometer Hygrometer LCD Display Fahrenheit (℉) for Humidors, Greenhouse, Garden, Cellar Review

You can tell they're pretty cheap but they seem accurate enough when cured with a humidity pack of 62%, in most cases between 61 and 62% relative, can be considered by humidity. They seem to be doing their job well and I would buy more

Tested with salt and distilled water, all but 3 were within 1%. These lazy things were 2% cheaper. It was sarcasm, they really impressed me. I have a calendar reminder to test it again in 6 months, I'll try to remember to update this review for accuracy and battery life.

Mine wasn't as accurate as other reviewers have said, plus one arrived with a cracked display. I used a jar with packets at 62% relative humidity. Leave them in a closed jar for 2 days. I also put a more expensive reader in a jar for them. My more expensive sensor showed 62%, as did one of them. 3 of them read 60. The rest were @59 with one at 58. Close enough I think.

Surprisingly cheap. I have read all the negative reviews. After using the product for several weeks, I am satisfied. No, they will not read the same number in the same environment. The product data shows that the relative humidity accuracy is +/- 4%. It's not great, but if you read the specs of ALL the competitors, they're no better. So you should expect some variation, but no more than 4%, which is the industry norm. Temp is slightly better again, consistent with others. I place them in my…

This is my second order. I post and distribute these things everywhere. Great for my guitar cases (acoustic guitars and violins with humidity around 45% or higher), basement, garage, etc. I bought these for a humidity sensor, but the temperature comes in handy for checking my heating and air conditioning readings in different rooms. Notifies you when there is a risk of mold growth in your garage or basement due to high humidity. A little inconvenience happened a second time, 3 units were off at

I ordered another set of hygrometers and had to return them as I couldn't change the temperature from C to F there was no switch where they said he was. This set only reads degrees Fahrenheit so it was perfect for me and the temperature was accurate to +/- 0.5 degrees with a calibrated thermometer. I bought them mainly because of the hygrometer function. I tested them with Boveda calibration kits and four of them were correct and the other two were accurate to +/- 1% RH. Since they're reported…

I bought these for relative humidity (RH) control in herbal medicine jars. Glued into the jars, they work fairly well, giving relative humidity readings that are consistently 2 to 4 percentage points lower than the NIST-monitored hygrometer in my lab. I can live with that since I'm tracking a range of relative humidity, not a specific value. Other reviews note discrepancies between individual units in bulk packaging, but I found they were actually quite compatible (see photo). Remember this…

So I needed them to adjust the air ducts and other areas of my air conditioner/oven. I had low expectations that they would be accurate due to the price. So I ran some basic tests on all of them to see if any of them were just junk. I was glad they were all usually within 1-2 degrees of each other. However, one of them had quite a wide read range, so I won't be using it. Test methods: - Cake pan to keep order - Take a photo of the data reading form later - Leave it in the room for at least 20…