3.9.9 Modem installation (for PLANAR-2D only)
GSM modem (Fig.34), which in essence is an analog
of cell phone without display and keyboard, is designed for
use in harsh environments (cold, vibration, etc.). The
modem, same as a cell phone, has a SIM card installed, i.e.
the heater acquires a full telephone number of your chosen
service provider. The modem can be installed in any
convenient, clean place. For more details about the modem
see Instructions to the modem.
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