Linear Home Security System DXT 41 User Manual

PRODUCT DESCRIPTION  
TRANSMITTER CONFIGURATIONS  
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 digitally coded wireless signal to its companion receiver.  
The digital DX code format features over a million 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.  
DXT-41  
DXT-41  
DXT-42  
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.  
BY  
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.  
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.  
KEY  
RING  
MINI  
TRANSMITTERS  
Operation Instructions  
DXT-42  
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.  
(760) 438-7000 • FAX (760) 438-7043  
USA & Canada (800) 421-1587 & (800) 392-0123  
Toll Free FAX (800) 468-1340  
DXT-41  
DXT-41 FEATURES  
DXT-42 FEATURES  
BATTERY REPLACEMENT STEP 1  
REMOVE TWO  
CASE SCREWS  
PRESS LEFT BUTTON TO  
SEND A CODE ONE  
TRANSMISSION  
PRESS BUTTON TO SEND  
A TRANSMISSION  
PRESS RIGHT BUTTON  
TO SEND A CODE TWO  
TRANSMISSION  
HOLD CASE TOGETHER  
AND FLIP OVER  
PRESS BOTH BUTTONS  
TO SEND A CODE THREE  
TRANSMISSION  
CAREFULLY  
LIFT TOP OF  
CASE OFF  
PRESS BUTTON(S) FOR A  
MINIMUM OF 2 SECONDS  
PRESS BUTTON FOR A  
MINIMUM OF 2 SECONDS  
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.  
CAREFULLY  
REMOVE THE  
CIRCUIT BOARD  
WARNING:  
HOLD BOARD BY  
EDGES ONLY  
CAUTION: DO NOT  
TOUCH OR ADJUST  
ANY PARTS ON BOARD  
PLACE BOARD  
ON ALIGNMENT  
POSTS  
BOARD  
ALIGNMENT  
POSTS  
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 !!!  
NOTE BATTERY  
LOCATIONS  
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.  
BATTERY TYPE  
CR1616, CR1620  
OR DL1620  
HOOK CASE  
HALVES  
TOGETHER  
SQUEEZE  
CASE TOGETHER,  
FLIP OVER AND  
REPLACE SCREWS  
WARNING: DO NOT  
INSTALL BATTERIES  
BACKWARDS, UNIT  
WILL BE DAMAGED!  
PLACE FRESH BATTERIES  
ON SPRING IN HOLDER  
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.  
PLUS (+) SIDE UP  
MINUS (-) SIDE UP  
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.  
BE SURE  
BATTERY SPRING  
IS IN PLACE  
Copyright © 2001 Linear Corporation  
211704 B  
 

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