Mortise, Deadbolt 2s, Deadbolt 2,  Keybox 2, Keybox 1

You can set an unlimited number of PIN codes for these models.

Latch and Deadbolt 01

You can generate 5 active generated PIN codes at the same time. 

You can generate up to 285 PIN codes (in total, including active and expired ones) before you need to reset the lock so that you can start creating new PIN codes again.