Honeywell MBeacon User Manual page 39

Year Of Manufacture
To identify the year of manufacture, refer to the serial number of
the instrument.
The letter in the serial number indicates the year of manufacture.
For example, "M" indicates the manufacturing year is 2010.
Letter
J
K
M
N
P
Q
R
S
T
U
V
W
MBeacon User's Guide
Year
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
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