If you purchased a battery backup unit, your opener will function normally even in a power outage. If not, then: How can I disconnect the garage door opener so I can manually open or close my garage door? Pulling the emergency release handle disconnects the garage door from the garage door opener. This action allows you to open and close the door manually. The emergency release handle is located at the end of a red rope that hangs from the garage door opener rail near the top of the garage door. Note: If you are using a residential jackshaft opener, the emergency release handle will be located at the bottom of the motor unit.