I have three other devices, they all agree within about 3% RH and a few degrees Fahrenheit. However, my yellow jacket, which costs a lot more than my other devices, has temperatures that are 12 degrees Fahrenheit lower and a relative humidity that is 6% higher than the highest other reading. And I can tell you that the temperature readings on other devices are about right; Yellowjacket says it's way cooler than it looks. The manual (only one page long) doesn't indicate if there is a way to recalibrate or reset the device (and I replaced the batteries with new ones). Chinese garbage.
π‘οΈ Inkbird Max 1200W Temperature Controller: Optimal Control for Greenhouse Climate
8 Review
Govee Temperature Hygrometer Thermometer Greenhouse
8 Review
Enhance Detection Accuracy with Klein Tools ET140 Non Destructive Detection
8 Review
Weather station hygrometer for home indoor household thermometer with humidity measurement ULBI H1
35 Review