Instructions

11
Example – uplink containing 2 messages
If there are more than 1 message in an uplink they are simply one after another.
Bytes (hex):
01 0E 0A 01 00 3B 98 09 B0 0B AD 0D E3 FB 78 05 00 0C 0B 53 4B 83 01 00 16 59 50 AA AE BA
Interpretation:
Bytes (hex)
Name
Meaning
01
Protocol version
01 – Version
0E
Message length
Message length 14, excluding length field.
0A
Message type
Type 10 = measurement data
01 00
Measurement
format
Always 1
3B
Measurement flags
Which of the measurement fields are included.
0x3B = 0011 1011, meaning all except 2
98 09
0 – Temperature
2456 -> 24.56C
B0 0B
1 – Relative
humidity
2992 -> 29.92%
AD 0D
3 – VOC
3501 ppb
E3 FB
4 – Differential
pressure
-1053 -> -10.53 Pa
78 05
5 – CO2
1400 ppm
00
Status flags
00 = No errors
0C
Message length
Message length 12, excluding length field
0B
Message type
Type 11 = utility
53
Utility bitflags
53 = 0101 0011, so fields 0,1,4,6 are included
4B 83 01
0 - Device type
Dev type 99147
00 16
1 – version
FWver 0.22
59
4 – battery
Battery 89%
50 AA AE BA
6 – Serial number
Serial number P424658
Maintenance
Checking the status
Press the button to check the status of Kombi. The LED located next to the micro USB socket will indicate
the status:
• If the LED blinks green, everything is fine, and the remaining battery capacity is estimated to be
over 20%.
• If the LED blinks red, the remaining battery capacity is estimated to be below 20%.
• If the LED doesn’t blink at all, device isn’t working properly.
Replacing the batteries
• Kombi is powered with a 3.6V Lithium Thionyl battery pack. The batteries should not be replaced
by the users.