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For more details, see LT-996 and LT-969 on the Mircom website and the USB fl ash. 
Mircom technical support: 1-888-647-2665

ASSEMBLING TX3-TOUCH-F15-B

© Mircom 2015

Printed in Canada

Subject to change without prior notice

LT-6125 rev 0

Warning: Turn the power off  
before wiring.

Line 1

Phone Lines

Non-confi gurable PBX 
systems are not supported. 
For more information, 
contact Mircom technical 
support at 1- 888-647-2665.

Line 2 
(optional)

T R

T

R

8

Postal Lock

Postal Lock

 (Input 1)

Fire Alarm Override (Input 2)
Door Contact (Input 3)
22 AWG

Warning: Do not attach 
the wiring until after the 
postal lock is installed.

Fire 
Panel

Door
Contact

TS5

7

Activation of this 
input relocks the main 
door (Output 1).

Activation of this input 
unlocks the main 
and auxiliary doors 
(Outputs 1 and 2).

Postal Lock:
see 

RS-485:
see 

Phone Lines:
see 

USB connector: 
Connect to computer 
for fi rmware upgrade 
and confi guration 
(maximum length of 
USB cable: 
8 feet/2.4 m)

Guard 
Phone board 
connector

TX3-MDM
Modem board 
connector

P7

P4

8

7

9

TX3-IP Module 
Connection

P5

22 AWG twisted pair, maximum length: 4000 ft (1219.2 m)
Mircom recommends shielded cable

RS-485

9

 120 Ω

 120 Ω

Panel 3

Last

 panel on network

Panel 2

Panel 1

First

 panel on network

Optional common 
reference connection 
if available

Connect shield to chassis 
ground on one panel only

Ground and Power

10

Remove nut and 
open cover to 
access ground and 
power terminals

To MD-990 24 VDC 
power supply

Ground 
(16 AWG)

To surface mount the power supply enclosure:
1. 

Find a suitable location for the power supply 
enclosure, such as over a wall stud.

2. 

Using the power supply enclosure as a template, 
mark the back mounting hole locations. Ensure 
that at least one side is over a wall stud.

3. 

Remove the power supply enclosure and place 
the top two screws halfway into the marked hole 
locations and wall stud.

4. 

Place the power supply enclosure onto the two 
screws.

5. 

Screw the other two screws into the remaining 
holes.

6. 

Tighten all four screws into place.

Note: The enclosure can also be mounted directly 
onto the drywall using anchors.

To building

power

To Touch Screen

{ {

1. 

Connect the MD-990 load power supply 
wires to the Touch Screen terminal 
screws as shown in step 10.

2. 

Connect the building power supply 
wires to the MD-990 line terminal screws 
as shown below.

3. 

Connect the other end of the building 
power supply wires the line voltage 
terminals.

4. 

Turn the power on by pressing the 
power button.

Mount the MD-990 
24 VDC, 156 W 
Power Supply

11

12

Connect the Power

Overall dimensions including door: 
height: 7 23/32” (196 mm)
width: 9 53/64” (250 mm)
depth: 2 37/64” (66 mm)
Knockout dimensions: 1 1/8” (29 mm) and 7/8” (22 mm)

9 1/5” (241 mm)

7 1/5” 

(191 mm)

7 3/4” (197 mm)

3” (76 mm)

A

B

USB port for 
keyboard

Power button

Mircom

CANADA - Main Offi

  ce

25 Interchange Way
Vaughan, ON L4K 5W3
Tel: (888) 660-4655
(905) 660-4655
Fax: (905) 660-4113

U.S.A
4575 Witmer Industrial Estates
Niagara Falls, NY 14305
Tel: (888) 660-4655
(905) 660-4655
Fax: (905) 660-4113

TECHNICAL SUPPORT
North America
Tel: (888) Mircom5
(888) 647-2665
International Tel: 
(905) 647-2665

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