Vaulted Garage Emergency Keyed Disconnect 
The keyed external disconnect switch that will allow access to any compatible opener during a power failure. The cable runs from the key lock to the disconnect carriage on the garage door opener. Metal construction with mounting hardware is included. Works with most garage door openers. This keyed emergency release garage door lock is perfect for those situations. A garage door emergency release lock is a necessity, especially if the garage door is the only entrance to your garage. 
Includes 3' of cable, hardware, instructions and 2 keys.