• The return value is an unsigned 2 bytes wide value, the unit is 1 lx (lux), the resolution is 1 lx, and the range is from 0 lx to 65,534 lx. Value 0xFFFF (i.e. 65,535 lx) specifies a sensor error.
• FRC 2-byte: FRC return value is the illuminance value +4 (i.e. 0x07D4 =2,004 is 2,000 lx). Because of FRC predefined values the raw values from 0xFFFC to 0xFFFF (i.e. 65,532 lx to 65,535 lx) cannot be passed.