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DE20-BT Industrial DTU | User Manual
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4.
Insert an activated SIM card to the SIM slot with the gold-colored contacts facing up,
and push the SIM card until it clicks;
5.
Install the antenna to the antenna connectors and tighten the connectors (round one
to the BT connector, flat one to the LTE connector);
6.
Use a DB9 male to 3.5mm serial adapter cable to connect the audio jack of the device
to a host computer when you need to read the data collected or
upgrade/debug/configure the device (a USB to RS232 female adapter cable might be
needed);
The serial debug port DOES NOT support hot plug. Every time when you unplug the
DB9
male to 3.5mm serial adapter cable from the DE20-BT or host computer, please restart
the DE20-BT before any further operations.
