Chamberlain Group Inc The 8621 User Manual

5

 Your garage door opener is equipped with features to 
provide you with greater control over your garage door 
operation. 

ALERT2CLOSE 
The Alert2Close feature provides a visual and an audible 
alert that an unattended door is closing. 

The Timer-to-Close feature automatically closes the door 
after a specifi ed time period that can be adjusted using a 
TTC enabled door control (Models 881LMW or 880LM). 
Prior to and during the door closing the garage door 
opener lights will fl ash and the garage door opener will 
beep.

®

MyQ

®

 technology uses a 900MHz signal to provide two-

way communication between the garage door opener and 
MyQ

®

 enabled accessories. Your garage door opener is 

compatible with up to 16 MyQ

®

 accessories.

Your garage door opener has already been programmed 
at the factory to operate with your remote control, which 
changes with each use, randomly accessing over 100 
billion new codes. Compatible with MyQ

®

 and 

Security+ 2.0

®

 accessories, see page 17.

Up to 12

Up to 2 Smart Control Panels or 4 
of any other Security+ 2.0

®

 door 

controls

Up to 1

When properly connected and aligned, the safety 
reversing sensors will detect an obstruction in the path 
of the infrared beam. If an obstruction breaks the infrared 
beam while the door is closing, the door will stop and 
reverse to full open position, and the opener lights will 
fl ash 10 times. If the door is fully open, and the safety 
reversing sensors are not installed, or are misaligned, 
the door will not close from a remote control. However, 
you can close the door if you hold the button on the door 
control or keyless entry until the door is fully closed. The 
safety reversing sensors do not affect the opening cycle.

ENERGY CONSERVATION
For energy effi ciency the garage door opener will enter 
sleep mode when the door is fully closed. The sleep mode 
shuts the garage door opener down until activated. The 
sleep mode is sequenced with the garage door opener 
light bulb; as the light bulb turns off the sensor LEDs will 
turn off and whenever the garage door opener lights turn 
on the sensor LEDs will light. The garage door opener will 
not go into the sleep mode until the garage door opener 
has completed 5 cycles upon power up.

LIGHTS
The garage door opener light bulbs will turn on when 
the opener is initially plugged in; power is restored after 
interruption, or when the garage door opener is activated. 
The lights will turn off automatically after 4-1/2 minutes. 
An incandescent A19 light bulb (100 watt maximum) or 
for maximum energy effi ciency a 26W (100W equivalent) 
compact fl uorescent light (CFL) bulb may be used.

The garage door opener is equipped with an added 
feature; the lights will turn on when someone enters 
through the open garage door and the safety reversing 
sensor infrared beam is broken. For added control over 
the light bulbs on your garage door opener. 

The garage door opener can be activated through a 
wall-mounted door control, remote control, or wireless 
keyless entry. When the door is closed and the garage 
door opener is activated the door will open. If the door 
senses an obstruction or is interrupted while opening the 
door will stop. When the door is in any position other 
than closed and the garage door opener is activated the 
door will close. If the garage door opener senses an 
obstruction while closing, the door will reverse. If the 
obstruction interrupts the sensor beam the garage door 
opener lights will blink 10 times. However, you can close 
the door if you hold the button on the door control or 
keyless entry until the door is fully closed. The safety 
reversing sensors do not affect the opening cycle. The 
safety reversing sensor must be connected and aligned 
correctly before the garage door opener will move in the 
down direction.