• The return value is 2 bytes wide unsigned value, the unit is 1 dB, the resolution is 1/16 dB and the theoretical range is from 0.0000 dB to 2047.9375 dB. Value 0x8000 (i.e. 2048 dB) specifies a sensor error. Greater values are not used.
• FRC 2-byte: FRC return value is the sound pressure level value +4 (i.e. 0x644 = 1604 is 100 dB).