
GSM-4/GSM-5
SATEL
8
Fig. 6. View of GSM-4 module electronics board.
Explanations for Figures 6 and 7:
GSM industrial
telephone
.
external antenna connection
.
LCD display
.
programming buttons
.
STAT
LED
indicating the module status (see section "LED indicators [only GSM-5]"
p. 11).
SIG
LED
indicating the level of antenna signal received by GSM telephone (see section
"LED indicators [only GSM-5]" p. 11).
SIM1
and
SIM2
LEDs
indicating the SIM card with which the module is working.
SIM card socket
(one in the GSM-4 module, two in the GSM-5 module). It is not
recommended that SIM card be inserted into the socket before the card PIN code has
been programmed in the module. The GPRS service must be activated in the SIM card
installed in the module, if the module is to use the functions requiring the GPRS
technology.