Multitech MultiModem MTCBA-G-F4 Quick Start Manual page 7

• Power for Optional Direct DC Power Connection:
∗
Connect the fused DC power cable into the power
connector on the modem.
∗
Then attach the two wires at the other end of the fused
cable to a DC fuse/terminal block on a vehicle in which
you are mounting the MultiModem.
∗
Connect the red wire to the "+" positive and the black wire
to the "-" negative. Be sure the GND connection is correct.
Warning
Over-voltage protection is provided on the device. To ensure
complete protection, you may want to add additional filtering
to the DC input.
Multi-Tech Systems, Inc. Quick Start Guide
MultiModem GPRS Wireless Modem
7