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INSTR,INSTL,VB-4
Linear P/N: 214634 A
Material: 20 Lb. Mead Bond
Size: 8.500" x 11.000"
Ink: Black
Scale: 1-1

VB-4

AUDIO
MODULE

For Use With 
PERS-2400
Personal Emergency
Reporting System

Installation
Instructions

(760) 438-7000 

 FAX (760) 438-7043

USA & Canada (800) 421-1587 & (800) 392-0123

Toll Free FAX (800) 468-1340

www.linearcorp.com

PRODUCT DESCRIPTION

The VB-4 Audio Module is designed as an add-on accessory for the
PERS-2400 Personal Emergency Reporting System Consoles. The
module plugs directly into the Console’s circuit board connectors.

A digitally synthesized human voice produced by the VB-4 module
announces important system information through the Console’s
speaker. The volume control adjusts the voice level.

The VB-4 features 2-way audio (manual and full duplex) and audio
listen-only capabilities for Central Station monitoring. The small
microphone supplied fits into the Console’s case. The module’s
high-gain amplifier allows the Central Station to monitor the sounds
in the installation after an alarm. In 2-way full duplex mode, the Central
Station operator can talk back to the subscriber through the Console’s
speaker. In 2-way manual mode the Central Station operator can
control the direction of the 2-way communications using a pushbutton
telephone.

The Model RSM-1 Remote Speaker/Microphone can also be used
with the VB-4 to increase its audio coverage area.

1. COMPONENT LOCATIONS

2. CONNECT MICROPHONE

3. MOUNT MICROPHONE IN CONSOLE

4. PLUG MODULE INTO CONSOLE

5. REMOTE SPEAKER & MICROPHONE

6. CENTRAL STATION AUDIO

LINEAR LIMITED WARRANTY

This Linear product is warranted against defects in material and
workmanship for twelve (12) months. The Warranty Expiration
Date is labeled on the product. This warranty extends only to
wholesale customers
 who buy direct from Linear or through
Linear’s normal distribution channels. Linear does not warrant
this product to consumers. 
Consumers should inquire from their
selling dealer as to the nature of the dealer’s warranty, if any. There
are no obligations or liabilities on the part of Linear
corporation for consequential damages arising out of or in
connection with use or performance of this product or other
indirect damages with respect to loss of property, revenue, or
profit, or cost of removal, installation, or reinstallation. 
All
implied warranties, including implied warranties for merchantability
and implied warranties for fitness, are valid only until Warranty
Expiration Date as labeled on the product. This Linear
Corporation Warranty is in lieu of all other warranties express
or implied.

SERVICE INFORMATION

All products returned for warranty service require a Return Product
Authorization Number (RPA#). Contact Linear Technical Service
at 1-800-421-1587 for an RPA# and other important details.

IMPORTANT !!!

Linear radio controls provide a reliable communications link and fill
an important need in portable wireless signalling. However, there
are some limitations which must be observed.

For U.S. installations only: The radios are required to comply
with FCC Rules and Regulations as Part 15 devices. As such,
they have limited transmitter power and therefore limited range.

A receiver cannot respond to more than one transmitted signal
at a time and may be blocked by radio signals that occur on or
near their operating frequencies, regardless of code settings. 

Changes or modifications to the device may void FCC
compliance.

Infrequently used radio links should be tested regularly to protect
against undetected interference or fault.

A general knowledge of radio and its vagaries should be gained
prior to acting as a wholesale distributor or dealer, and these
facts should be communicated to the ultimate users.

Copyright © 1999 Linear Corporation 

214634 A

MICROPHONE

TERMINALS

CONSOLE MICROPHONE (+)

MICROPHONE COMMON (-)

EXTERNAL MICROPHONE (+)

MODULE-TO-CONSOLE

CONNECTOR

MICROPHONE

DIGITAL VOICE

VOLUME CONTROL

MODULE-TO-CONSOLE

CONNECTOR

2-WAY AUDIO

CONSOLE SPEAKER

VOLUME CONTROL

(FULL DUPLEX MODE ONLY)

NOTE: IN 2-WAY MANUAL MODE

THE AUDIO LEVEL IS ALWAYS

AT FULL VOLUME

CONNECT BLACK 
MICROPHONE WIRE TO 
CENTER TERMINAL

CONNECT RED MICROPHONE 
WIRE TO THIS TERMINAL

PRESS FIT MICROPHONE
INTO ROUND MOUNTING
HOLE IN PERS-2400
CONSOLE CASE

SEAT MICROPHONE
COMPLETELY INTO
PERS-2400 CONSOLE
CASE

1

2

CAREFULLY ALIGN
PINS TO CONNECTORS
ON BOTH ENDS OF BOARD

NOTE: POWER MUST
BE OFF AND BATTERY
SHOULD BE REMOVED
OR DISCONNECTED
BEFORE INSTALLING
THE AUDIO BOARD

BE SURE THAT THE
WHITE ARROWS ON
AUDIO BOARD POINT
TOWARDS THE
BATTERY AREA

PRESS BOARD
COMPLETELY
INTO CONNECTORS

1

2

3

1 - EXTERNAL SPEAKER

2 - EXTERNAL SPEAKER

3

4

5

PERS-2400 CONSOLE

TERMINAL BLOCK

VB-4 TERMINAL BLOCK

EXTERNAL MICROPHONE (+)

MICROPHONE COMMON (-)

CONSOLE MICROPHONE (+)

LINEAR MODEL RSM-1

RSM-1 TERMINAL BLOCK

SPKR

SPKR

MIC (-)

MIC (+)

VB-4
VOICE
BOARD

RSM-1
TERMINALS

USE TWISTED
PAIR WIRE 
FOR
MICROPHONE

NOTE: REMOVE
JUMPER WHEN

USING AN

EXTERNAL SPKR

REMOVE

JUMPER

WIRE

PROGRAM THE CONSOLE FOR
THE DESIRED AUDIO MODE

AFTER THE ALARM REPORT
IS SENT, THE CONSOLE WILL
SWITCH TO THE PROGRAMMED
AUDIO MODE FOR 90 SECONDS

PRESS "9" TO DISCONNECT THE CALL

PRESS "3" TO LISTEN

PRESS "1" TO TALK

ALL

AUDIO

MODES

2-WAY MANUAL

AUDIO MODE

THE "1" AND "3" KEYS ARE NOT USED IN LISTEN-ONLY AUDIO MODE

CENTRAL STATION OPERATOR:
USE THESE KEYS ON A TELEPHONE SET
CONNECTED TO THE COMMUNICATOR LINE
TO CONTROL THE AUDIO MODULE

THE "1" AND "3" KEYS CAN BE USED IN FULL DUPLEX MODE,
ALTHOUGH THE MODULE WILL SWITCH TO 2-WAY MANUAL
MODE UNTIL THE NEXT CALL

PRESSING ANY OTHER KEY WILL EXTEND THE AUDIO TIME 90 SECONDS

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