EEEKit Digital Hygrometer Thermometer, 5-Pack Temperature Humidity Meter Gauge, Indoor Mini Hydrometer for Greenhouse, Black

I bought a five-pack of these. I unpacked them and left them to settle for an hour and all showed humidty measures within one percent of each other and the same temperarures within one and a half degrees. I checked the accuracy of the hygrometer by doing a wet salt hygrometer test (google to find out how) and it was accurate. The temperature measure agreed with a room thermometer too. So all in all they seem fairly accurate and measure within the tolerances stated.The units themselves do not have a base or a stand, they look like they were designed to be fitted into a hole in a panel - there are little clips at the end for retaining them. This doesn't matter to me. If you do fit them this way, the sensor appears to be set into the back so you would be measuring the humidity behind the panel, not in front of it. Bear in mind too, that if you used these lying on their backs you would be blocking the sensor vent and it might take much much longer to respond to humidity changes.

You know why you're buying this, yes it does exactly what you need them to do

I have two of these in the same sealed jar for over 24 hours. One is reading 66%, and the other 71%. For something this price I am not expecting a laboratory level of accuracy. But 5% difference between two sensors is unacceptable. I am returning for something better.UPDATE - Before I returned these - I left them on my desk for a couple of hours. I have attached a photo. As you can see the Humidity reading varies by 7% across the five devices. TERRIBLE.

Really handy modules to use in 3D printing and filament storage. One failed after 4 months - it wasn't the battery which was a tad disappointing, but they are so cheap it wasn't worth pursuing. For filament storage you just have accept that they bottom out at 18%RH. That said, when run side by side all showed the same (near enough) temperature and humidity readings. Would have got 5 stars if it wasn't for the one that failed.

You get 5 and the others you get 4 but cost more the 4 pack is better?? I bought the 4 pack from the other company and they never arrived.. this product cost less I got one extra and they were here super quick.. great little product and super accurate because I checked them against a Ac infinity 6" exhaust fan and a Inkbird temprature controller and a govee thermometer and they are all spot on.. Happy Dayz everyone..

OK wanted these to track the humidity in the house (solid stone wall farmhouse) and put one in each room. Had a friend check them with a more expensive humidity reader (no idea if that makes in better or not - but at least I tried!) They are consistent and quick to measure.The only downside so far is that they are delivered with the batteries connected, no doubt they will last a long time but for the sake of a simple paper strip the batteries could have been 'turned off'.

You don't expect high quality or consistency at this sort of price, so it was no particular surprise to find that two of the five units were badly out of line with the other three. (One was reading much lower, while the other one was much higher.) But hey, I suppose three good gauges was fair for the money?

I bought a 5 pack, and in the first 24h, I've just compared with a trusted weather station. They all were in the ±1%rh range, so I considered them as accurate. It has a quite quick response, and very small, so installing on weird places (see attached photo) is also possible.This housing is good for experience, but not really good looking for a permanent station. It is designed for panel mounting, but don't put into a fully closed box, because all the openings are on the rear side.