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FAQs

What Zero products to I use to improve acoustic (STC) ratings?

Resolution: In many homes and buildings, there is a need for sound control solutions. Examples are hospital rooms, therapy offices and sound studios to name just a few. There are numerous variables t...:

How to troubleshoot Wi-Fi Connectivity issues.

Resolution: Issues communicating with a lock or Wi-Fi adapter can come from a few different sources, please follow the below troubleshooting steps to resolve connectivity issues. Mobile Device B...:

Dutch Door Prep Continuous Hinge, 600/700 series

Resolution: The only continuous hinges available with a Dutch door prep are the 600/700 series, which is an engineering special option. When ordering a 600/700 series continuous hinge with a Dutch door p...:

Wiring diagram for L949X EU (electrically unlocked) when using the deadbolt monitor to disable outside from becoming unlocked when deadbolt is thrown.

Resolution: L949X EU (electrically unlocked) with deadbolt monitor (DM) can be found here.:

Wiring diagram for L949X EL (electrically locked) when using the deadbolt monitor to disable outside from becoming unlocked when deadbolt is thrown.

Resolution: L949X EL (electrically locked) with deadbolt monitor (DM) can be found here. :

Are the letters engraved on the D271 indicator deadbolt?

Resolution: The indicator sign for the B571/D271 is an engraved aluminum plate. :

What is the leading edge of a door with respect to door bottoms ?

Resolution: With respect to mortised automatic door bottoms (ADB) , door will sometimes be specified with a clean leading edge. This is specified for aesthetics. For mortised automatic do...:

What does "LBS" mean in my Von Duprin exit device description?

Resolution: This means Less Bottom Strike in Von Duprin nomenclature:

Can the Von Duprin 996L-NL Rigid Lever Trim be converted to "classroom" Active Lever Trim (996L)?

Resolution: No, the 996 L NL Rigid Lever Trim has a different spindle and different internal parts than the "active" lever trim, 996L. A new 996L lever trim must be obtained.:

Is the Von Duprin 88 EO ready to accept a rim cylinder for NL function?

Resolution: Yes, the 88 EO device has a "drive" cam on the backplate that will retract the latch when turned by a rim cylinder tailpiece. The 88 EO device is also "NL" function. :