Nortek Security & Control LLC/GTO Access MMK100 User Manual

SCREW ANCHORS

MOUNTING SCREWS

KEYPAD

INSTR,INSTL, MMK100 - GTO P/N: 10015840 - INK: BLACK - MATERIAL: thin - SIZE: 11.000” X 17.00” - SCALE: 1-1

HINGED COVER
PROTECTS THE 
KEYPAD

SOFT BLUE LIGHTS
ILLUMINATE THE KEYS
FOR NIGHTTIME USE

LIGHT BUTTON TURNS THE 
GARAGE DOOR OPERATOR’S 
LIGHT ON AND OFF WHEN THE
DOOR IS OPEN

UP/DOWN (    ) BUTTON STAYS ACTIVE FOR
30 SECONDS AFTER A CODE IS USED SO THE 
OPENER CAN BE STOPPED OR REVERSED

TEN KEYS ENTERING 
1-6 KEYPAD CODES
USING NUMBERS OR LETTERS

DIGITAL KEYPAD

Press the opener’s LEARN BUTTON for 1 second and release.

The opener should BEEP and the LIGHT should BLINK once.

The RED LED will remain lit in Learn Mode for 15 seconds.

While the RED LED is lit, enter a 1-6 digit code 
into the keypad. Then PRESS and HOLD the 
keypad’s START/STOP key until the opener 
BEEPS and the light BLINKS once.

RED LED

Press 

LEARN 

button

1

1

2

2

Repeat Steps 1 & 2 for any additional keypad codes.

Printed in China for GTO Access Systems, LLC.

 

MOUNT THE KEYPAD 
INCLEAR VIEW OF THE
DOORWITH THE TWO 
SCREWS SUPPLIED

USE THE ANCHORS 
SUPPLIED IF REQUIRED

REMOVE BATTERIES
BEFORE MOUNTING

3

INSTALL 3 FRESH
AAA BATERIES

4

SLIDE BATTERY 
COVER CLOSED

1

2

SLIDE BATTERY 
COVER OPEN

REMOVE THE OLD 
BATTERIES AND 
DISPOSE OF THEM 
PROPERLY

MIGHTY MULE LIMITED WARRANTY
This product is warranted to the consumer against defects in material and workmanship for one year from the date of purchase. This warranty 

applies to first retail buyers of new devices. Mighty Mule will repair, or at its option, replace, any device it finds that requires service under this 

warranty, and will return the repaired or replaced device to the consumer at the Might Mule’s cost. For warranty service and shipping instructions 

contact Mighty Mule Tech Service. Devices must be sent to Mighty Mule for service at owner’s expense. The remedies provided by this warranty 

are exclusive. Implied warranties under state law are to the one year period of this written warranty. Some states do not allow limitations on 

how long an implied warranty lasts, so the above limitation may not apply to you. In order to be protected by this warranty, save your proof of 

purchase and send copy with equipment should repair be required. This warranty gives you specific legal rights, and you may also have other 

rights which vary from state to state.
All products returned for warranty service require a Return Product Authorization Number (RPA#). Contact Mighty Mule Technical Services at 

1-800-543-1236 for an RPA# and other important details.

Mighty Mule® is the retail brand of GTO Access Systems, LLC

3121 Hartsfield Road • Tallahassee, FL 32303

Mighty Mule Sales: 800-543-4283 • Fax 850-575-8912

Mighty Mule Technical Service 800-453-1236

For more information on Mighty Mule’s full line of Garage Door Openers, Gate Openers and Access 

Controls visit www.mightymule.com

ENTER USER KEYPAD CODE

1

PRESS (      ) BUTTON

2

 

 

1

2

PRESS THE LIGHT (      ) BUTTON (TO LIGHT KEYPAD) 

1

2

3

1-6 DIGIT KEYPAD CODE THAT
WAS ENTERED INTO OPENER

ENTER THE KEYPAD CODE

PRESS

ENTER THE KEYPAD CODE

PRESS 

1-6 DIGIT KEYPAD CODE THAT
WAS ENTERED INTO OPENER

WARNING: Changes, modifications or adjustments not expressly 

approved by GTO Access Systems, LLC could void the user’s authority 

to operate this equipment. There Are No User Serviceable Parts.

NOTICE: This device complies with Part 15 of the FCC Rules. 

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.

This device complies with Industry Canada License-exempt RSS 

standards. Operation is subject to the following two conditions: (1) 

this device may not cause harmful interference, and (2) this device 

must accept any interference, including interference that may cause 

undesired operation of the device.

KEEP BATTERIES OUT REACH OF CHILDREN. Swallowing batteries 

can lead to serious injury or death. If you suspect someone has 

swallowed a battery, go to the hospital immediately. Do not induce 

vomiting or eat or drink anything. 
For more information, call the National Battery Ingestion Hotline: 202-

625-3333. 
The battery identification number for this product is AAA Alkaline (LR03).

To delete a keypad code that you no longer want 

follow the same steps above. The opener will 

recognize the code and delete it from memory. The 

RED LED and LIGHT will blink 4 times to show the 

code was successfully deleted.

3 AAA batteries included.

DESCRIPTION:
This MMK100 Digital Keypad is designed for use with Mighty Mule garage door openers. The radio format provides unparalleled security 
with more than a million different codes.

To activate the garage door opener, the user enters their unique 1 to 6 digit long code on the unit’s keypad and presses the ( 

    ) button. 

For up to 30 seconds after the last activation, the keypad can be re-triggered by simply pressing the ( 

    ) button again. This allows the 

user to stop or reverse the opener quickly, without having to re-enter their code.

The keypad has built-in lighting for use at night or in dark areas. The clear silicone keys are backlit with a pleasing blue glow. Pressing any 
key will activate the backlight.

The keypad lockout timer will disable the keypad after 10 unsuccessful activations. The keypad must remain idle for 30 seconds before 
new attempts.

The Mighty Mule garage door opener contains a built-in receiver that is 
programmed by sending a signal from the keypad. This stores the keypad’s 
code into the receiver’s memory. The receiver will retain its memory even 
without power and will only activate from the “memorized” keypad.