Preassembled vs DIY

Hello, I’m leaning towards buying a DIY AirGradient ONE, but I’m concerned about the lack of being tested like the preassembled one is.

If I get a DIY kit, is there a way I can be confident that the sensors are working correctly?

We have very low amount of sensor modules that fail our internal testing (probably less than 1%) but if you want to be sure you can go for the tested version.

Thank you. Is it pretty obvious when a sensor fails? Or is there not a real way to really know unless you have another meter to compare it to?

Yes normally it’s obvious when they fail. Often they are stuck at very high values.