SONOFF THS01 Temp and Humi Sensor

The RJ9 connector makes swapping this into my setup effortless—just a quick click and it's reading. I've got it tracking the humidity inside my fermentation chamber and the 0-100%RH range covers everything I need.

Even at -30°C in my chest freezer, the readings stay spot-on, which is a huge relief for monitoring frozen desserts. The hot-plugging RJ9 connector makes it easy to swap into different setups without powering everything down first.

The RJ9 connector makes hot-swapping this thing painfully easy, I just unplug it and move it between my fridge and greenhouse without any setup fuss. The -40°C to 85°C range gives me solid peace of mind tracking frozen goods and summer heat alike.