Review on 🌡️ Newlight66 Digital Hygrometer - 12 Pack Indoor Outdoor Hygrometer Thermometer (°F) for Humidors, Home, Car, Greenhouse with Humidity Gauge by Cristina Gonzalez

Although the temperature or humidity readings may differ when placed side by side, the difference is only 1-3 digits. They work great. I cut the lids of the cans to fit snugly with no air gaps to get accurate readings during the curing process. This was very helpful in determining which jars needed more air and which jars were ready to close, with the occasional burp.