There will be holes in the vertical track that can be used with a simple padlock.
Unlocking garage door track.
There are two bars running from the handle that release the door to be unlocked manually and there is also a button on it which moves the bars across to lock the door.
A common problem with garage doors is that they go off track from time to time which can be a particularly annoying problem when the weather is bad or you are in a rush.
Lodged garage door track.
To lock it push out the sliding bolt.
This is an easy fix by realizing this problem and then unlocking your garage door.
If you install only the sk7115 you can lock and unlock your garage door from the inside.
Locking and unlocking from the inside.
Use a key padlock on the vertical track to prevent the door from being opened manually.
The sliding bolt should automatically spring open.
In order to unlock your manually locked garage door you just need to turn the knob or large handle located in the middle of your door.
Garage doors like anything else with moving parts require periodic maintenance.
To open it up all you need to do is thread a coat hanger or hooked piece of wire through the top of the door and open the emergency latch which can also be done by the rope many emergency latches.
Check to see if anything a shovel broom etc fell and is now stuck in the track that is causing it to be lodged.
You can also use the operating lever.
If the garage door vertical track is locked the door cannot be opened.
Keep turning it until you hear a click.
Your jammed garage door can be caused by something as simple as an obstruction in the track.