Linear Door Door User Manual

DESCRIPTION  
MDTK COMPONENTS  
KEYPAD FEATURES  
The MDTK Digital Keypad is one of Linear’s MegaCode series of wireless  
radio controls designed for use with automatic garage door and gate  
operators. The MegaCode radio format provides unparalleled security with  
more than a million different codes.  
In operation, the user enters their unique code on the unit’s keypad (1 to 6  
digits long) and presses the START/STOP button to activate the door operator.  
For up to 30 seconds after the last activation, the MDTK can be re-triggered by  
simply pressing the START/STOP button again.This allows the user to stop or  
reverse the opener quickly, without having to re-enter their code.  
The MDTK has built-in keypad lighting for use at night or in dark areas. The  
clear silicone keys are backlit with a pleasing green glow. By pressing the  
START/STOP button first, before entering their code, the user can light up  
the keypad. Pressing the START/STOP button twice at any time will light up  
the keypad.  
MDTK  
HINGED COVER  
PROTECTS THE  
KEYPAD  
DIGITAL KEYPAD  
TRANSMITTER  
Installation Instructions  
TEN KEYS FOR ENTERING  
1-6 DIGIT KEYPAD CODES  
USING NUMBERS OR LETTERS  
SCREW  
PLUGS  
SOFT GREEN LIGHTS  
ILLUMINATE THE KEYS  
FOR NIGHTTIME USE  
A
B
C
The keypad lockout timer will disable the keypad after 10 activations. The  
keypad must remain idle for 30 seconds before new attempts.  
START/STOP BUTTON STAYS ACTIVE FOR  
30 SECONDS AFTER A CODE IS USED SO THE  
OPENER CAN BE STOPPED OR REVERSED  
SCREW  
ANCHORS  
MegaCode receivers are programmed by sending a signal from the user’s  
transmitters.This stores the transmitter’s code into the receiver’s memory.The  
receiver will retain its memory even without power and will only activate from  
these “memorized” transmitters. Each MDTK keypad code can be considered  
a different transmitter. Each MegaCode receiver can remember a maximum  
of 10 transmitters (40 for gate receivers). Any combination of portable  
transmitters and keypad codes up to the maximum number can be entered.  
MOUNTING  
SCREWS  
MDTK  
NOTE: FOR SECURITY, THE KEYPAD WILL SHUTDOWN  
AFTER 10 CODE ENTRIES UNTIL IT IS IDLE FOR 30 SECONDS  
THE MDTK CAN BE PROGRAMMED INTO LINEAR'S MEGACODE  
GARAGE DOOR OPERATORS AND RECEIVERS ONLY  
(760) 438-7000 • FAX (760) 931-1340  
PROGRAMMING OPERATORS  
PROGRAMMING RECEIVERS  
THE MDTK CAN BE PROGRAMMED INTO MDR,  
ENTER A  
1 TO 6 DIGIT  
CODE ON  
THE KEYPAD  
PRESS RECEIVER PROGRAMMING  
BUTTON 1 OR 2 WITHIN 20 SECONDS  
NOTE: Be sure to press the receiver  
program button for less than 2 seconds.  
1
2
MDR-2, MDRG AND SMDRG RECEIVERS. LOCATE  
THE PROGRAM BUTTON(S) AND LED ON THE  
SIDE OF THE RECEIVER CASE.  
PRESS THE OPERATOR'S LEARN LIGHT GLOWS  
1
LEARN BUTTON  
FOR 15 SECONDS  
WARNING: Door operator will not  
activate when the receiver is being  
programmed from the transmitter, but  
the door operator will activate the next  
time the transmitter is activated after  
programming.  
CHANNEL ONE  
PROGRAMMING  
BUTTON  
1
2
OPERATOR LIGHTS  
FLASH WHEN THE  
KEYPAD CODE IS  
ACCEPTED  
PROGRAMMING  
LED  
NOTE: PRESSING THE LEARN BUTTON FOR  
MORE THAN 10 SECONDS WILL ERASE ALL  
KEYPAD CODES AND REMOTE CONTROLS  
PRESS  
START/STOP  
WITHIN 5  
THE RECEIVER LED  
WILL LIGHT FOR 5  
SECONDS IF THERE  
IS ROOM IN THE  
RECEIVER LED  
5
4
3
NOTE: The programming LED also  
monitors radio signals entering the  
receiver. It is common to see an  
occasional blink from the LED. The  
LED will also light when any  
transmitter tuned to the receivers  
frequency (programmed into the  
receiver or not) is activated.  
2
WILL FLASH AS  
TRANSMITTER IS  
ENTERED  
CHANNEL TWO  
PROGRAMMING  
BUTTON (MDR-2  
ONLY)  
WHILE THE LEARN  
LIGHT IS ON, ENTER  
A 1-6 DIGIT KEYPAD  
CODE AND PRESS  
THE KEYPAD'S  
SECONDS  
RECEIVER MEMORY  
1
START/STOP KEY  
1
2
2
CONNECT AND POWER THE RECEIVER AS  
DESCRIBED IN IT'S INSTALLATION INSTRUCTIONS.  
REPEAT STEPS 1 & 2  
FOR ANY ADDITIONAL  
KEYPAD CODES  
3
WALL MOUNTING  
KEYPAD OPERATION  
CHANGING BATTERIES  
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 LLC 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 LLC Warranty is in lieu of all  
other warranties express or implied.  
DAYTIME OPERATION  
2
1
REMOVE THE TWO  
SCREWS AND SLIDE  
REMOVE THE  
LOW BATTERY  
AND DISPOSE  
OF IT PROPERLY  
1
ENTER THE KEYPAD CODE  
PRESS START/STOP  
THE BATTERY COVER OFF  
2
MOUNT THE KEYPAD IN  
CLEAR VIEW OF THE DOOR  
WITH THE TWO SCREWS SUPPLIED  
INSTALL A FRESH  
9-VOLT ALKALINE  
OR LITHIUM  
USE THE SCREW  
ANCHORS SUPPLIED  
IF REQUIRED  
1-6 DIGIT KEYPAD CODE THAT  
WAS ENTERED INTO OPENER  
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.  
BATTERY  
NIGHTTIME OPERATION  
IMPORTANT !!!  
1
PRESS START/STOP (LIGHTS KEYPAD)  
ENTER THE KEYPAD CODE  
PRESS START/STOP  
Linear radio controls provide a reliable communications link and fill an important need in portable  
wireless signaling. 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.  
2
3
3
4
REPLACE THE  
BATTERY COVER  
AND INSTALL  
BE SURE THE  
SILICONE  
GASKET IS  
IN PLACE  
SCREW  
PUSH IN THE  
ANCHORS  
TWO SCREW  
COVERS TO HIDE  
THE SCREWS  
THE TWO SCREWS  
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.  
1-6 DIGIT KEYPAD CODE THAT  
WAS ENTERED INTO OPENER  
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.  
NOTE: TO STOP OR REVERSE THE OPERATOR , THE START/STOP BUTTON  
CAN BE PRESSED AGAIN FOR UP TO 30 SECONDS WITHOUT RE-ENTERING  
THE CODE  
 

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