I've been using the AcuRite ones that are able to be calibrated for a couple of years now that cost about $13. I set them using the salt/water method and they've kept on ticking for me forever. However, I have found they tend to drift from their settings. I don't know if it's the nature of the beast, or the fact that the snakes knock them over sometimes and they get clumps of substrate in the openings where I'm guessing the sensors are. I can't rely on something that says 80% humidity for a high humidity snake, and I occasionally put another unit in right next to it and it reads only 55%.

I emailed Adam at Wicken's Wicked Reptiles because I noticed in some of his videos he uses a different type than I do. He linked me to an Amazon listing where you can get a 2 pack of Govee units for $25, so they're about the same price. In a q/a on the listing, someone asked if they can be calibrated. They replied they're set from the factory to within 3% but in the app there is supposed to be an option to calibrate. The bonus is they are bluetooth, so I can just check my phone (assuming I can read multiple units from the same app) from my bedroom or whatever and know what all the snake's enclosures are like.

Just curious if anyone has any input on what they like or ways to keep mine more accurate?