Multitech Wireless EDGE User Manual page 10

Optional Fused DC Power Connection
Multi-Tech Systems, Inc. MultiModem Wireless Modem with Ethernet Interface (S000375E)
Fused DC Power Connection
•
Connect the direct-DC power supply cable into the DC
power source on the vehicle or machine in which you are
mounting the modem. Be sure the GND connection is
correct.
•
Connect red wire to + (positive) and black wire to –
(negative).
Note: For automotive application: according to the type of
application, you can use permanent "+" or key-
switched "+". Connect the power supply to its source
(for example, in a mobile situation, to the vehicle's
DC fuse/terminal block).
Warning: Over-voltage protection is provided on the
device. To ensure complete protection, you may want to
add additional filtering to the DC input.
Chapter 2 – Getting Started
10