Chamberlain Group The 7881 Part 15 Spread Spectrum Transceiver User Manual 114A4503 indd
Chamberlain Group Inc, The Part 15 Spread Spectrum Transceiver 114A4503 indd
Exhibit D Users Manual per 2 1033 b3

1
MyQ® CONTROL PANEL  
MODEL 888LM
To prevent possible SERIOUS INJURY or DEATH from electrocution:
•  Be sure power is NOT connected BEFORE installing door control.
•  Connect ONLY to 12-35 VOLT low voltage wires. 
To prevent possible SERIOUS INJURY or DEATH from a closing 
garage door:
•   Install door control within sight of garage door, out of reach of 
children at a minimum height of 5 feet (1.5 m), and away from ALL 
moving parts of door.
•   NEVER permit children to operate or play with door control push 
buttons or remote control transmitters.
•   Activate door ONLY when it can be seen clearly, is properly 
adjusted, and there are no obstructions to door travel.
•   ALWAYS keep garage door in sight until completely closed. NEVER 
permit anyone to cross path of closing garage door.
•   DO NOT install this door control on garage door opener systems 
controlling one-piece or swing doors.
To provide an adequate visual alert, the garage door opener light 
bulb(s) MUST be a minimum of 40 Watt (or eqv.).
The MyQ® Control Panel is intended to be installed with Security✚™ 
Garage Door Openers manufactured between 1998 and present. The 
MyQ® Control Panel is NOT compatible with Security✚ 2.0™ Garage Door 
Openers. DO NOT install this door control on garage door opener 
systems controlling one-piece or swing doors.
APPLICATION
The MyQ® Control Panel offers a quick and convenient way to add 
Security✚ 2.0™ and MyQ® technology to your existing garage door 
opener. MyQ® technology uses a 900MHz signal to provide two-way 
communication between the garage door opener and MyQ® enabled 
accessories. You may program up to 12 Security✚ 2.0™ remote controls, 
2 Security✚ 2.0™ keyless entries and a combination of 16 MyQ® 
accessories to the MyQ® control panel.
COMPATIBLE ACCESSORIES
Security
✚
 2.0™ Accessories: MyQ® Accessories:
Model 891LM 
1- Button Remote Control Model 823LM 
Remote Light Switch
Model 893LM 
3-Button Remote Control Model 825LM 
Remote Light Control
Model 890MAX 
3-Button Mini MAX Remote Control  Model 828LM 
LiftMaster® Internet Gateway 
Model 893MAX 
3-Button MAX Remote Control  Model 829LM 
Garage Door and Gate Monitor
Model 895MAX 
3-Button Premium MAX Remote 
Control 
Model 877LM 
Wireless Keyless Entry
Model 877MAX 
Wireless MAX Keyless Entry 
OVERVIEW
Install the MyQ® Control Panel in place of the existing door control. Due 
to power consumption the MyQ® Control Panel cannot be used in 
conjunction with another wired door control connected to your garage 
door opener. If an additional door control is needed, the wireless door 
control model 885LM can be programmed to the MyQ® Control Panel.  
To program the 885LM to the MyQ® Control Panel, follow the remote 
control programming steps. When in battery back-up mode, any feature 
using unattended operation such as Timer-to-Close, close from a garage 
door and gate monitor or remote operation utilizing the LiftMaster® 
Internet Gateway will be disabled.
  1.   Disconnect all electrical and battery power (if applicable) to the 
garage door opener.
  2.  Remove the existing door control from the wall.
  3.   Note the polarity of the wires connected to the existing door 
control.
      • Label the wire connected to the RED terminal.
      • Label the wire connected to the WHITE terminal.
    Disconnect the wires from the existing door control.
  4.   Connect the wires to the new MyQ® Control Panel. Make sure the 
polarity is correct.
      • Red wire to the R terminal.
      • White wire to the W terminal.
INSTALLATION
Existing Door Control
Discard, donate 
or recycle
Wire from 
RED terminal Connect 
RED wire to 
R terminal
Wire from 
WHITE 
terminal
Connect 
WHITE 
wire to W 
terminal
MyQ® Control Panel
  5.  Mount the MyQ® Control Panel to the wall.
  6.   Reconnect power. The yellow command LED and the red learn LED 
will blink quickly for up to 5 minutes as the control panel 
recharges. When the control panel is operational, the yellow 
command LED will glow steadily.

2
PIN
?? ??
PROGRAMMING
REMOTE CONTROL 1.  Press the MyQ® Control Panel LEARN 
button twice, the red learn LED will turn 
on.
2.  Press the button on the remote control 
that you wish to operate your garage 
door.
3.  The garage door opener lights will flash 
(or two clicks will be heard) when the 
code has been programmed.
1.  Press the MyQ® Control Panel LEARN button twice, the red learn 
LED will turn on.
2.  Enter a 4-digit personal identification number (PIN) of your choice 
on the keyless entry keypad. Then press the ENTER button.
3.  The garage door opener lights will flash (or two clicks will be heard) 
when the code has been programmed.
KEYLESS ENTRY
LEARN 
Button
LEARN 
Button
Model 825LM - Remote Light Control 
Light module can be synchronized with the 
garage door opener light bulbs.
Model 823LM - Remote Light Switch
Light module can be synchronized with 
the garage door opener light bulbs.
LEARN 
Button
Model 829LM - Garage Door and Gate Monitor 
Indicates the status of your garage door from inside 
the home and allows you to close an open garage door 
from inside the house.
MyQ® ENABLED 
ACCESSORIES
1.  Press the MyQ® Control Panel LEARN 
button twice, the red learn LED will 
turn on.
2.  Press the LEARN button on the MyQ® 
device.*
* MyQ® accessories may be programmed to the 
LiftMaster® Internet Gateway (Model 828LM) 
or the MyQ® control panel. For instructions on 
programming to the internet gateway refer to 
the manual.
INTERNET GATEWAY
The LiftMaster® Internet Gateway gives you control of your garage door 
from your internet connected computer or mobile device. You must have 
your internet gateway registered to your customer account at 
www.myliftmaster.com in order to use it with the MyQ® Control Panel. Go 
to www.myliftmaster.com and follow the instructions to create an account 
and register your device if you have not already.
To program your control panel to the LiftMaster® Internet Gateway:
  1.  Go to www.myliftmaster.com from a computer or mobile device.
  2.   Click on “Manage Places>Add New Device>Garage Door Opener” 
and follow the directions.
  3.   Once you click ADD you have 3 minutes to press the LEARN button 
two times on the MyQ® control panel. The red learn LED will turn 
on.
  4.   The red learn LED will turn off when programming is complete. 
Once the control panel is learned, it will appear on your screen. You 
can then name the device (e.g., My Control Panel, etc.)
Model 828LM 
LiftMaster® Internet Gateway
www.myliftmaster.com
Command 
LED (yellow)
Learn 
LED 
(Red)

3
PUSH BAR
Press the push bar to open/close the door.
LIGHTS
Press the LIGHT button to turn the garage door opener lights on or off. 
When the lights are turned on they will stay on until the LIGHT button is 
pressed again, or until the garage door opener is activated. Once the 
garage door opener is activated the lights will turn off after the specified 
period of time (the factory setting is 4-1/2 minutes). The LIGHT button 
will not control the lights when the door is in motion.
To change the amount of time the garage door opener lights will stay on:
Press and hold the LOCK button until the garage door opener lights flash. 
The time interval is indicated by the number of flashes.
Light Feature
The lights will turn on when someone enters through the open garage 
door and the safety reversing sensor infrared beam is broken. If using the 
garage door opener light as a work light, turn the light on using the light 
button on the door control or the light will turn off if you are beyond the 
range of the sensor.
Activate:
   Start with the garage door opener lights on. Press and hold the LIGHT 
button until the garage door opener lights turn off, then on again.*
Deactivate:
   Press and hold the LIGHT button until the garage door opener lights 
turn on, then off again.*
* Approximately 10 seconds
FUNCTIONS
NUMBER OF TIMES GARAGE 
DOOR OPENER LIGHTS FLASH 1234
TIME THE GARAGE DOOR 
OPENER LIGHT STAYS ON 1 ½ 
Minutes 2 ½ 
Minutes 3 ½ 
Minutes 4 ½ 
Minutes
MOTION SENSOR
This feature will automatically turn on the garage door opener lights when 
motion is sensed. The lights will come on for the set period of time, then 
shut off.
Activate/Deactivate:
  Slide the motion sensor switch ON or OFF.
TIMER-TO-CLOSE (TTC)
NOTE: DO NOT install this door control on garage door opener systems 
controlling one-piece or swing doors.
The TTC feature automatically closes the door after a specified time 
period (1, 5, or 10 minutes). Once the TTC has been set and the door is 
open, the LED for the selected close interval will blink and begin to count 
down to close the door. The control panel will beep and the garage door 
opener lights will flash before closing the door. 
The TTC feature will deactivate if the garage door encounters an 
obstruction twice; or the safety reversing sensors are incorrectly installed. 
The garage door will reverse open and WILL NOT close until the 
obstructions are clear or the safety reversing sensors are correctly 
installed. When the obstruction has been cleared or the safety reversing 
sensors have been aligned, the door will close when the garage door 
opener is activated.
Activate:
   Press and hold the ON button until one of the TTC LEDs light up. Then 
press the ON button again to cycle through the time interval options 
(the corresponding TTC LED will light for each time interval). The 
garage door opener light bulbs will blink as confirmation.
Deactivate:
   Press and hold the OFF button until all TTC LEDs turn off and a beep is 
heard from the control panel. 
Temporarily hold door open (suspend TTC):
   Press and release the HOLD OPEN button. The HOLD OPEN button will 
begin to flash. Press the HOLD OPEN button again to resume normal 
TTC operation.
LOCK
Activate*:
   Press and hold the LOCK button for 2 seconds. The command LED will 
flash as long as the lock feature is activated and your handheld remote 
control will not operate your door at this time.
Deactivate:
   Press and hold the LOCK button again for 2 seconds. The command 
LED will stop flashing and normal operation will resume.
*  Your LiftMaster® branded keypad will continue to work when LOCK has 
been activated.
LIGHT 
Button
1 Minute 
TTC LED
5 Minute 
TTC LED
10 Minute 
TTC LED
ON Button
Command 
LED (yellow)
OFF Button
HOLD OPEN 
Button
Motion 
Sensor
LEARN 
button
Learn LED 
(Red)
LOCK 
button
Push Bar (Open)

  © 2012, The Chamberlain Group, Inc.
114A4503  All Rights Reserved 
FOR SERVICE DIAL OUR TOLL FREE NUMBER:
1-800-528-9131
www.liftmaster.com
ONE YEAR LIMITED WARRANTY
The Chamberlain Group, Inc. warrants to the first consumer purchaser of 
this product that is free from defect in materials and/or workmanship for 
a period of 1 year from the date of purchase.
  •   If the yellow command LED does not turn on, reverse the wires 
connected to the R and W terminals of the control panel. Replace 
wire if necessary.
  •   If yellow and red LEDs are blinking slowly, the control panel is not 
compatible with your garage door opener.
  •   If the yellow and red LEDs are blinking quickly, the control panel is 
charging, and may take up to 5 minutes to become operational.
NOTICE: To comply with FCC and/or Industry Canada (IC) rules, adjustment or modifi cations of this transceiver 
are prohibited. THERE ARE NO USER SERVICEABLE PARTS. Any changes or modifi cations not  expressly 
approved by the party responsible for compliance could void the user's authority to operate the equipment.
This device complies with Part 15 of the FCC rules and IC RSS-210. 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 Class B digital apparatus complies with Canadian ICES-003.
AVIS: Les règles de la FCC et/ou d’Industrie Canada (IC) interdisent tout ajustement ou toute modifi cation de 
ce récepteur. IL N’EXISTE AUCUNE PIÈCE SUSCEPTIBLE D’ÊTRE ENTRETENUE PAR L’UTILISATEUR. Tout 
changement ou toute modifi cation non expressément approuvé par la partie responsable de la conformité peut 
avoir pour résultat d'annuler l'autorité de l'utilisateur de faire fonctionner l'équipement.
Cet appareil est conforme aux dispositions de la partie 15 du règlement de la FCC et de l'norme IC RSS-210. 
Son utilisation est assujettie aux deux conditoins suivantes: (1) ce dispositif ne peut causer des interférences 
nuisibles, et (2) ce dispositif doit accepter toute interférence recue, y compris une interférence pouvant causer 
un fonctionnement non souhaité.
Cet appareil numerique de la classe B est conforme a la norme NMB-003 du Canada.
WARRANTY
TROUBLESHOOTING
ERASE DEVICES FROM MEMORY
Erase all remote controls and keyless entries:
  1.   Press and hold the LEARN button on the control panel until the red 
learn LED goes out (approximately 6 seconds). All remote control 
and keyless entry codes are now erased. Reprogram any 
compatible accessory you wish to use.
NOTE: Erasing remote controls and keyless entries from the control panel 
does not erase them from the garage door opener, you need to erase the 
memory of the garage door opener separately.
Erase all devices (including MyQ® enabled accessories):
  1.   Press and hold the LEARN button on the control panel until the red 
learn LED goes out (approximately 6 seconds). 
  2.   Immediately press and hold the LEARN button again until the red 
learn LED goes out. All codes are now erased. Reprogram any 
compatible accessory you wish to use.