Oh I didn't mean you, I think your device would be an appropriate or ideal hacking target with the PPM. I was referring to the OP who supposedly did their research and bought it anyway. I thought you had a different device.

It's surprising that your device has the reading and it would have been a great read if it was hacked to display the air pressure to gauge the longevity. If it's a different model and you're interested maybe you can flash esphome on it.