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→Header Section
Communication packet consists of two sections: the dataheader section and the data section.
==== Header Section ====
{| class="wikitable sortable" border="1" cellpadding="2" width="500px"
! Offset!! Type!! Field
|-
0|| Integer (2 byte) || Packet type (always equal to 2)
|-
2 || Integer (4 byte) || Packet length (exclusive of 60 byte of data header)
|-
6|| Integer (2 byte) || Device type – 767 or 02FF (Hex) for UA-767PBT,
|-
321 or 0141 (Hex) || for UC-321PBT
|-
8 || Byte || Flag
|-
9 || Integer (2 byte) || Year of measurement
|-
11 || Byte || Month of measurement
|-
12 || Byte || Day of measurement
|-
13 || Byte || Hour of measurement
|-
14 || Byte || Minute of measurement
|-
15 || Byte || Second of measurement
|-
16 || Integer (2 byte) || Year of transmission
|-
18 || Byte || Month of transmission
|-
19 || Byte || Day of transmission
|-
20 || Byte || Hour of transmission
|-
21 || Byte || Minute of transmission
|-
22 || Byte || Second of transmission
|-
23 || Byte (6) || Bluetooth ID of remote unit
|-
29 || Byte (6) || Bluetooth ID of access point (null)
|-
35 || Byte (12) || Serial Number of A&D PBT Series
|-
47 || Byte (10) || Reserved
|-
57 || Byte || Device Battery Status (Note 1)
|-
58 || Byte || Reserved
|-
59 || Byte || Device Firmware Revision and Hardware Revision (Note 2)
|}