This lock would not be suitable on a final exit door, they are not tested for weather resistance or external use. You may wish to consider the Yale Y3 Keyless Connected Night Latch Kit if operating a night latch.

If a wrong code is entered five times the
handle is locked-out for 3 minutes and the
light will flash red every five seconds. To pass
the lock-out, enter the correct code twice
and then once more to gain access. It is possible to set a passage mode on the handle which will allow code free access.