ALLJOY Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Humidity Monitor

At this price, it is completely usable. I think I will upgrade to charging mode because battery recycling is very troublesome.

They work well, but they're a little too small.

It's small, so it can be put anywhere without being too conspicuous. It's easy to take from one floor of your home to another. It looks very accurate

I don't know how hot or cold it is to wrap my baby in suitable clothes in our room. This allows us to know how to prevent overheating, or whether he is picky due to the cold. Due to our sleep problems not requiring body temperature, it makes us feel at ease.

I tried it for a week next to two other devices, one digital device and one analog device. The readings of the other two are equivalent. The temperature of the device is always too low (a few degrees Fahrenheit) and the humidity is too high (4-5%). This is not good enough. I'm back.