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Resolution: The 98/99 rim and vertical rod exit devices are shipped with NL drive screw to function as a Night Latch. To convert the device to Class Room, remove the NL Drive Screw on 98/99 center case ass...:

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

Resolution: Double cylinder (-2 or -2SI) 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). Thi...:

How does the S51 operate?

Resolution: The S51 is a tubular entrance lock with a key outside and a turn button on the inside. Function: Unlocked by key from outside when outside lever is locked by turn-button in inside lever. Inside le...:

How do you convert the Von Duprin 370 series controls to NL or night latch function?

Resolution: You must have the Von Duprin NL Cylinder plate part number 967484-89 to convert the 370 series controls from classroom function to night latch function. If new installation, use the NL cylinde...:

Can a 24-R, 24-V, 25-R, or 25-V device use just a cylinder on the pull side for NL-OP function?

Resolution: This is possible. A rim cylinder with cylinder anchor plate is used (anchor plate provided with rim cylinder package). No other special components are required. Order device as NL-OP.&...:

Why can't I order an AD-Series or CO-Series mortise deadbolt with a classroom/storeroom (70) function

Resolution: * NOTE: the AD300/400 devices simply communicate the change in Deadbolt Position status to the Host software. The software then decides what action should or should not be taken at the device. :

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