None.
The three lock keys are CapsLock, NumLock, and ScrollLock. Keys that were turned off with this command can be turned back on with RestoreLockKeys.
<Hotkey F1> <SendPC 192.168.1.105> <TurnLockKeysOff>
<Hotkey F2> <SendPC 192.168.1.105> <RestoreLockKeys>
TurnLockKeysOff RestoreLockKeys TurnCapsLockOff RestoreCapsLock