I am sure the sensor is fine and the weird USB port can be fixed (though it looked like they do not make it easy to disassemble the body). However, the device is just so janky and unpleasant to use I am not sure I want to go through the trouble. I started looking at Airthings, though I was recommended AirGradient as well.

> until this year I always just used their website to view the data or the app

Never used their app to check my own unit. My apartment is small. I am here in this room, the device is right here in this room, would I want to go fetch my phone to know the readings?

> Also, for the indoor ones, you can set DND mode (I forget the exact name they use) and it'll turn off the display during the night

Of course, but it means it should be within reach to turn on and it will blast blue light in my face should I want to check it at night. An e-ink screen would work best, considering low refresh rate is not an issue in this scenario.