5. This is an interesting door. It can be set up for a simple
solenoid or for a standard footprint lock; notice the relocker
guide to the left of the solenoid: that guide is for a relocker
used with a standard footprint lock. There is no relocker for
use with a simple solenoid. Notice that the solenoid piston
does not itself actually block anything. The teeter-totter
does the blocking. The keylock is dual purpose.