All security 2 0 garage door openers have a yellow learn button and two yellow antennas.
Liftmaster garage door opener 891lm manual.
The code between the remote control and the receiver changes with each use randomly accessing over a billion new codes.
Remote controls models 891lm 893lm for use with security 2 0 products.
Location of the learn button.
Chamberlain group cgi the corporate parent company to liftmaster chamberlain merlin and grifco is a global leader in access solutions and products.
As a result of the change in safety standards many manufacturers have been deleting pre 1993 manuals from what.
The code between the remote control and the receiver changes with each use randomly accessing over a billion new codes.
Refer to your product manual for the to prevent possible serious injury or death from a moving gate or garage door.
We design and engineer residential garage door openers commercial door operators and gate entry systems.
One thing to keep in mind when searching for your manual is the age of your liftmaster opener.
Beginning in 1993 federal safety standards required that all garage door openers include an anti entrapment feature like the infrared garage door sensors found on most modern models.
Refer to your product manual for the.
Page 2 to control the garage door opener lights this feature is only available on garage door openers equipped with a multi function door control and a remote control with more than one button.