PCB Reference
IMPORTANT - PLEASE READ
Please make sure you disconnect the power when you fit the simcard. Then slide the
simcard into the holder making sure that the clipped corner of the simcard lines up with the
clipped corner of the simcard holder as seen in the image above.
Signal LED (
blue
) The
blue
LED flashes once per second indicating a signal has been found.
Ready LED (
green
) The
green
LED will come on when the unit is ready for operation.
Charger LED (
red
) The
red
LED indicates that the battery is in charging mode.
Battery Switch - push on to turn battery backup on (battery only charges with battery switch on)
Dipswitch
The dialler can work on 2G, 3G & 4G networks. The module works worldwide with all
simcards (see page 3 for applicable bands). You can choose which frequency the unit will
use at the start by using the dipswitch combinations below
1 - Dipswitch 1 Set to OFF & Dipswitch 2 Set to OFF
= Unit boots up in 2G
2 - Dipswitch 1 Set to ON & Dipswitch 2 Set to OFF
= Unit boots up in 3G
3 - Dipswitch 1 Set to ON & Dipswitch 2 Set to ON
= Unit boots up in 4G
Figure 1
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Page 3
