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3 of 3

8/24/2007
#19871

724-746-5500

   blackbox.com

TECH SPECS

Approval — FCC Class B
Line Type — 2-wire dialup
MTBF — 56,200 hours
Programming — From DTMF tones of telephone
Connectors — (3) RJ-11 ports: (1) for telephone line, (1) for device,

(1) for programming

Indicators — (1) Power LED
Temperature Tolerance — Operating: 32 to 113°F (0 to 45°C); 

Storage: -40 to +158°F (-40 to +70°C)

Power — 120 VAC, 60 Hz; 

Input current: 142 mA; 
Output current: 830 mA; 
Output voltage: 12 V RMS

Size — 2"H x 6.5"W x 7.25"D (5.1 x 16.5 x 18.4 cm)
Weight — 3 lb. (1.4 kg)

Item

Code

Phone Line Manager Pro Master

FX139A

You may also need…

Phone Line Manager Pro 104

FX134A

NOTE: For more information on the Pro 104, request 
Product Data Sheet 19345 or call Black Box Tech Support.

Phone Line Manager Pro 104 (FX134A)

Additional phone line manager

ADDITIONAL EQUIPMENT YOU MAY NEED

FX139A

TYPICAL APPLICATIONS

• Automated telemetering
• Energy-management systems
• Remote-diagnostic systems
• Fluid-storage systems
• Point-of-sale terminals
• Time/attendance

Recognize any of these situations?

• You wait more than 30 minutes to get through 

to a vendor’s tech support.

• The so-called “tech” can’t help you or gives you 

the wrong answer.

• You don’t have a purchase order number and the

tech refuses to help you.

• It’s 9 p. m. and you need help, but your vendor’s 

tech support line is closed.

According to a survey by Data Communications

magazine, 90% of network managers surveyed say
that getting the technical support they need is extremely
important when choosing a vendor. But even though
network managers pay anywhere from 10 to 20% of their
overall purchase price for a basic service and support
contract, the technical support and service they receive falls
far short of their expectations—and certainly isn’t worth
what they paid.

At Black Box, we guarantee the best value and the 

best support. You can even consult our Technical Support
Experts before you buy if you need help selecting just 
the right component for your application.

Don’t waste time and money— call Black Box today.

Why Buy From Black Box? Exceptional Value.
Exceptional Tech Support. Period.

Manager Pro 104 in each location. For example, you can
connect three computers in separate locations to any number
of multiple computers around the country using three Phone
Line Manager Pro Master units and multiple Phone Line
Manager Pro 104 units.

In a typical installation, attach the phone line to the TEL

LINE port on the back of the unit, then attach a computer or
dialing device with modem to the DEVICE PORT. To program
the Phone Line Manager Pro Master, just attach a standard
phone via the unit’s PROG PORT.

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