Review on 🌡️ 2-Pack Mini Digital Hygrometer Gauge Indoor Thermometer by Meggsi - LCD Monitor for Temperature and Humidity Measurement in Humidors, Greenhouse, Jars, Incubators, Guitar Case - Fahrenheit Display (℉) by Stephen Pendergrass

I chose this product because it was very cheap and it came in a 2 pack. I was a bit hesitant as it only had 4 reviews in a short amount of time. . However, I was pleasantly surprised at how accurately both react to changes in temperature and humidity. I highly recommend this product. I've added a picture of their size compared to my car key, they don't have built in magnets or anything but they are perfect to leave in different rooms on a table or something.