Review on 🌡️ 4-Pack Indoor Thermometer Hygrometer - Digital Temperature Sensor and Humidity Meters Gauge with LCD Room Monitoring Display for Cars, Bedrooms, and Baby Rooms by Lukundo Lim

I bought these out of curiosity to see how different rooms in my house differ in temperature and humidity. For the first few days I placed all 4 next to each other and all but one matched. The one who did not agree differed only by 1 degree in temperature and 1-2 degrees in humidity. Although sometimes they all read the same. I also put one in my Ruggard dry box to see how accurate it is. Pretty close to my Ruggard display. Definitely not what I would use if I needed pinpoint accuracy, but they give a very good idea of what the humidity level is in any room.