Review on 🌡️ EEEkit 5-Pack Mini Thermometer Hygrometer - Small Digital Electronic Temperature Humidity Meters Gauge for Indoor Use - LCD Display Fahrenheit - Ideal for Humidors, Greenhouse, Garden, Cellar, Fridge, Mason Jar by Paul Massey

Humidity accuracy is within the range stated in the product description, +/- 5%, which is fine with me. Of the 5 units obtained, none showed the same readings, but all were within 3% of the actual value for temperature and humidity. If you are looking for a cheap hygrometer/thermometer to get an "estimate" of your space constrained environment, then I highly recommend these. For more accuracy, I use my $20 device, which has worked reliably for several years. Note: The device comes with pre-installed batteries. So remove them first if you don't plan to use them right away.