3M MP220 Operator's Manual page 143

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3M Pocket Projector MP220
About
About lists information about the projector such as model number and operating
system version.
Legal Information
Opens the Legal Information screen. You can view the open source license.
Model Number
Displays the model number for the projector.
Android Version
Displays the operating system version.
Kernel Version
The kernel is the software that acts as an interface between the projector's
hardware and the graphical user interface. The kernel software is specific to the
projector. This line tells you the version that is currently running.
Build Number
When software is made (or compiled), a build number is assigned to it. This
provides you and customer support agents with accurate information about the
version of the operating system loaded onto the projector.
Serial Number
This is the serial number of the projector. This same serial number is located on a
label beneath the battery.
Optical Engine Serial Number
This is the serial number for the installed optical engine.
Over-temperature errors
If the projector over heats, the overheating occurrence will be recorded here.
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