HygroSmart HS3 User’s Manual
Michell Instruments
35
APPENDIX B
Register TYPE_C (Date Registers)
The calibration dates are stored as 4 BCD digits in a word, 0xMMYY, where MM is a 2-digit BCD
month number & YY is a 2-digit Year.
Example: 0x112 = November 2025
Register TYPE_D (Sensor Firmware)
The
fi
rmware is displayed as "A.B.C", where A, B & C are integers in the range 0-255.
A = REG_SENSOR_FIRMWARE_HI & 0x00FF
B = (REG_SENSOR_FIRMWARE_LO & 0xFF00) >> 8
C = REG_SENSOR_FIRMWARE_LO & 0x00FF
Example: If REG_SENSOR_FIRMWARE_HI = 0x0001 and REG_SENSOR_FIRMWARE_LO = 0x0203,
the the sensor
fi
rmware version is displayed as "1.2.3"
