Review on 🌡️ Mini Hygrometer Thermometer Electronic Digital Humidity Gauge Monitor LCD Display for Indoor Humidity Temperature Meter Sensor - Ideal for Greenhouse, Garden, Cellar, Fridge, and Closet (12 Pieces, Black) by Deanna Martinez

Works much better than expected given the price. I took them all out and put them on the table at night. The next day they all read exactly the same and they were the same as my more expensive home unit and thermostat. I have several 5 gallon screw top buckets that I store my filament in for printing. I drilled a hole in the center of each cap (using a very large step drill) and then pushed one of them in. Now I can see the moisture inside the bucket without removing the lid so I can tell if the dehumidifier is working. They sit very low on the lid so I can still stack buckets on top of each other.