Mini Hygrometer Thermometer 2PCS Mini Digital Humidity Gauge, AikTryee Hygrometer Indoor Humidity Monitor, Temperature Humidity Gauge Meter for Humidors, Greenhouse, Garden, Cellar, Closet, Etc

They are very accurate for the price.

It reads the temp and humidity, both consistently read the same values within 2% and 0.3 degrees when I had them next to each other. This is all I expected from these. If you need anything more accurate than you’ll probably want to spend more money. I ended up buying four more of these to place around my house to keep track of temp changes. As for battery life I have no idea, I’d assume they last pretty long since they shouldn’t use much power. They did include extra batteries which is nice.

I ordered these to check the humidity in a cheap dehydrator I use to dry 3D printer filament, and at first was disappointed because they showed different temperatures, but since they showed the same humidity reading, I decided to go ahead and give them a shot. After about a day, they both read the same temperature, and are within one or two degrees and a couple of percent humidity of what our household thermometerhygrometer reads, so Im satisfied that they function fairly well. For those who are complaining about the inaccuracy, Id recommend giving them a day or two to acclimate. I have no idea why they would read differently upon arrival and then slowly adjust to the correct temphumidity, but thats what happened with mine. Keep in mind that these are very cheap, so wont be as accurate as an expensive hygrometer. If youre trying to protect your expensive cigars, or keep your bearded dragon comfortable, DONT BUY A CHEAP HYGROMETER! If you just need something to show that the dehydrator you bought at a thrift store is actually working, these work just fine. The fact that mine included 4 extra batteries is an added bonus.

The temperature seemed to be accurate as both indicated the same temperature, but the humidity readings varied by 2 +/- percentage points when sitting side by side. Still close enough for what I need. and a good price.

They work well with a 1% variance in humidity between the two, the temp is matching on both. I got them to monitor the humidity of my guitar since I live in a very humid area. A spare set of batteries were included thankfully, because the ones included were low and after a couple of days the readings varied widely. But a battery change solved the issue. Im happy with my purchase.

good product fast shipping

This works well and for the price you cant go wrong.

I bought this so time ago and it still works! I can read it perfectly and i believe it gives me a better accuracy than other that i have bought! Will update if anything changes.

I use these in my snake enclosures to monitor tamps and humidity they work perfectly for what I needed. Great little product

It’s the second time I’ve ordered some of these digital hydrometers and they really work great and I was not expecting to have the extra batteries which is a huge plus for me. It’s always hard for me to keep up with batteries and now I have some extra ones, keep up the great work