The direct rotary handle can either be locked with padlocks or a keylock.
Locking with Padlocks:
Up to three padlocks can be fitted. The shackle diameter must be between 5 to 8mm.
Locking with a keylock:
Install: a keylock adaptor (without lock), part number 32604, and either a Ronis lock, part number 41940 or a Profalux lock 42888
The locks have random key numbers and come complete with two keys.