Watch-Dog 3388C Product Manual - page 7
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3. Connect the red and black leads that are attached to the Battery+ and Battery- terminals to
the red and black terminals on the lead-acid battery (Caution: Reversing the wires can damage
the modem). Slide the battery to the back of the enclosure as shown in photo below. This al-
lows the door to close properly
4. Your cellular carrier may require the modem’s IMEI number. This number should be written
on the box in which the modem was shipped. If not, you will need to loosen one of the screws
from the modem’s aluminum mounting bar and rotate it so the IMEI number can be read off of
the modem itself.
5. If you have a GPRS modem and subscribe to a Spectrum Technologies data plan (US mar-
ket only), the SIM card may already be installed. Otherwise, to install the SIM card, remove the
flexible cover from the modem end. Insert your SIM card according to the white outline inside
the modem’s board. Replace the flexible cover and slide the modem back into the enclosure.
Aluminum
Mounting
Bar
SIM Card
Holder