How does the 98-2 or 99-2 double cylinder function affect the outside lever trim?

Inside cylinder locks and unlocks the outside trim, such as thumb piece, knob or lever.  Outside cylinder functions as an NL when inside cylinder locks the outside trim.

Double cylinder features an inside key cylinder which locks or unlocks the outside trim and an outside key cylinder which retracts the latch bolt only (Night latch function). Available
on rim or mortise lock device.

Rim requires two rim type cylinders. Mortise device requires 1 rim cylinder and 1 mortise cylinder 11/4" with a straight cam. (Schlage cam reference L583-475.)
Available functions are thumbpiece, knob or lever.

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