This remote uses cr2032 battery.
How to change garage door opener battery.
The unit shown is a chamberlain but o.
If you are replacing your garage door and your existing door opener does not have battery backup you must replace your existing opener with a battery backup opener.
This is a step by step instructional video on how to change out the cr 2032 battery on your garage door opener remote.
How to change the battery on a liftmaster door opener remote.
Can i get product support if i purchase a non battery backup garage door opener from another state and install it in california after july 1st 2019.