• The return value is 2 bytes wide unsigned value, the unit is 1 μg/m3, the resolution is ΒΌ μg/m3 and the theoretical range is from 0 to 8,191.75 μg/m3. Value 0x8000 (i.e. 8,192.00 μg/m3) specifies a sensor error. Greater values are not used.
• FRC 2-byte: FRC return value is particulates PM2.5 value +4 (i.e. 0x45 = 69 is 16.25 μg/m3).