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MDTK
DIGITAL KEYPAD
TRANSMITTER
Installation Instructions
(800) 421-1587
•
www.linearcorp.com
DESCRIPTION
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.
By pressing the START/STOP button first (or twice), before entering
their code, the user can light up the keypad. The clear silicone keys
are backlit with a pleasing green glow.
The keypad lockout timer will disable the keypad after 10 activations.
The keypad must remain idle for 30 seconds before new attempts.
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.
STEP 1
Verify Receiver Installation. Be sure the receiver is
connected to the garage door operator as described in the
receiver’s Installation Instructions. Apply power to the operator
before programming.
STEP 2A
MDR/MDRNR/MDR2 Program button and LED
Location. Locate the program button and LED on the side of the
receiver case.
STEP 2B
M D R M / M D R M 2 P r o g r a m b u t t o n a n d L E D
Location. Locate the program button and LED on the back of the
receiver case.
STEP 3
Program receiver. Enter a code (1-6 digits) on the
keypad and momentarily press the receiver’s program button
(channel one or two). The red programming LED will light if
there’s room in the receiver’s memory for another transmitter or
keypad code. Press the START/STOP button to program the
receiver. A transmitter must be entered
while the receiver
LED is on
. The LED stays on for about 5 seconds. The LED will
flicker when the receiver has accepted the transmitter.
➥
NOTE: Be sure to press the receiver program button for less than
2 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.
➥
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 receiver’s
frequency (programmed into the receiver or not) is activated.
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PRESS RECEIVER
PROGRAMMING
BUTTON 1 OR 2
WITHIN 20 SECONDS
ENTER A
1 TO 6 DIGIT
CODE ON
THE KEYPAD
PRESS START/STOP
WITHIN 5 SECONDS
1
2
4
1
2
RECEIVER LED
WILL FLASH AS
TRANSMITTER IS
ENTERED
5
1
2
THE RECEIVER LED
WILL LIGHT FOR 5
SECONDS IF THERE
IS ROOM IN THE
RECEIVER MEMORY
3
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CONNECT RECEIVER TO GARAGE DOOR OPERATOR
CHANNEL TWO
PROGRAMMING
BUTTON (MDR2 ONLY)
CHANNEL ONE
PROGRAMMING
BUTTON
PROGRAMMING
LED
CHANNEL TWO
PROGRAMMING
BUTTON
(MDRM2 ONLY)
CHANNEL ONE
PROGRAMMING
BUTTON
PROGRAMMING
LED
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SCREW
PLUGS
SCREW
ANCHORS
MOUNTING
SCREWS
MDTK
