Linear DXT-41 User's Manual

Linear Home Security System User's Manual - DXT-41.
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INSTR,INST,DXT-41/42,1CH MINI TX
LINEAR P/N: 211704 B
MATERIAL: 20 LB. MEAD BOND
SIZE: 8.500" x 11.000"
INK: BLACK
SCALE: 1-1

DXT-41
DXT-42

MINI
TRANSMITTERS

Operation Instructions

PRODUCT DESCRIPTION

The DXT-41, DXT-42 are battery powered, portable, miniature
transmitters designed for use with Linear’s DX Format receivers.
Each transmitter can be used in a limitless number of wireless
remote control applications. Pressing a button on the transmitter
sends a digital y coded wireless signal to its companion receiver.
The digital DX code format features over a mil ion possible codes.
The DX transmitters are precoded at the factory to unique codes,
so no field coding is required. The two-button transmitter sends
variations of its preset code depending on which buttons are
pressed. Transmitters can send a signal for up to 10 seconds with
each single-button activation.
For versatility, 

any transmitter code can be programmed into any

receiver channel. Receivers must be programmed to the
transmitter code before system testing and operation. DX Format
digital receivers are programmed by “Learning” the preset factory
code from the transmitter. Refer to the receiver’s instructions for
details on programming.
Each transmitter is powered from two 3-Volt Type 1620 lithium
batteries with an expected battery life of up to 5 years. When the
transmitter’s range decreases, or stops functioning, replace the
batteries.
A detachable key-ring is provided for each transmitter. Each
transmitter button has a positive “click” feel. The right button on
the DXT-42 has raised bumps for easy identification.

TRANSMITTER CONFIGURATIONS

DXT-41
The DXT-41 is a one-button, one-code transmitter. Pressing the
button sends the transmitter’s code to the receiver. Press the
button for a minimum of two seconds to insure receiver activation.

DXT-42
The DXT-42 is a two-button, three-code transmitter. Each button
sends a unique code. Pressing both buttons together sends code
three. Press button(s) for a minimum of two seconds to insure
receiver activation.

DXT-41 FEATURES

DXT-42 FEATURES

BATTERY REPLACEMENT STEP 1

BATTERY REPLACEMENT STEP 2

BATTERY REPLACEMENT STEP 3

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.
All products returned for warranty service require a Return Product Authorization
Number (RPA#). Contact Linear Technical Services 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 © 2001 Linear Corporation 

211704 B

(760) 438-7000 • FAX (760) 438-7043

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

Toll Free FAX (800) 468-1340

www.linearcorp.com

BY

DXT-41

DXT-42

KEY
RING

PRESS BUTTON TO SEND
A TRANSMISSION

PRESS BUTTON FOR A
MINIMUM OF 2 SECONDS

PRESS LEFT BUTTON TO 
SEND A CODE ONE 
TRANSMISSION

PRESS RIGHT BUTTON 
TO SEND A CODE TWO 
TRANSMISSION

PRESS BOTH BUTTONS 
TO SEND A CODE THREE 
TRANSMISSION

PRESS BUTTON(S) FOR A
MINIMUM OF 2 SECONDS

REMOVE TWO
CASE SCREWS

HOLD CASE TOGETHER
AND FLIP OVER

CAREFULLY
LIFT TOP OF
CASE OFF

PLACE FRESH BATTERIES
ON SPRING IN HOLDER

PLUS (+) SIDE UP

MINUS (-) SIDE UP

WARNING: DO NOT
INSTALL BATTERIES
BACKWARDS, UNIT
WILL BE DAMAGED!

BE SURE
BATTERY SPRING
IS IN PLACE

BATTERY TYPE
CR1616, CR1620
OR DL1620

CAREFULLY
REMOVE THE
CIRCUIT BOARD

NOTE BATTERY
LOCATIONS

BOARD
ALIGNMENT
POSTS

WARNING:
HOLD BOARD BY
EDGES ONLY

PLACE BOARD
ON ALIGNMENT
POSTS

HOOK CASE
HALVES
TOGETHER

SQUEEZE
CASE TOGETHER,
FLIP OVER AND
REPLACE SCREWS

CAUTION: DO NOT
TOUCH OR ADJUST
ANY PARTS ON BOARD

FCC NOTE:

This device complies with FCC Part 15. Operation is subject to the 
following two conditions: (1) This device may not cause harmful 
interference and (2) this device must accept any interference 
received, including interference that may cause undesired operation.

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