These have to be the least accurate things I have ever seen.
The rectangular one is accurate or accurate enough and has been what I used but I noticed files all had cutouts for these round hygrometers…
Well from my 6 pack 1 is within a margin of error to even be useful.
I get they aren’t expensive but seems like a waste of money for this bad.
@Krauerking@lemy.lol Hygrometers are only as good as their components. Buying a DHT11/22 or SHT31 from AliExpress ($1-2) alongside an ESP8266/32 and you’d have much better results than buying these “are my cigars dry” pucks.
I don’t even think these would helpfully let you know if your cigars are dry. 2 of them barely changed humidity over time and I noticed the sensors were flush with the board instead of exposed.
I ended up buying inkbird ITH10s because I generally don’t go completely self made since I’m not overly tech crafty and more work with my hands crafty.