just received a PM 2.5 module. Is there any place I can check for a manual? after powered on the display is showing 3 areas:
"standard" and "ambient" show PM1.0, PM2.5 and PM10.
both "standard" and "ambient" show the same numerica values on the above fields
then I have the number or paticles, temperature and humididy.
none of the 3 buttons of the M5 module work, is this intended?