what is fail safe

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FS, EL, Electrically Locked
To convert the E360L electric trim from fail safe to fail secure or vice versa you need to replace the solenoid.  The 050743 is the fail secure and 050744 is the fail safe solenoid kit.  See atta...
The Schlage ES-6400 Electric Strike has been rebranded to Von Duprin 6400 Series Electric Strike, making Allegion’s full electric strike portfolio Von Duprin branded.  All product feature...
Information available at:  http://us.allegion.com/products/system_components/electric_strikes/pages/mortise_cylindrical.aspxOverview, Features and Benefits, Technical Specifications, Wiring In...
The ND electrified motor driven locks shipping as of  March 14, 2016 has a field selectable operating mode, you can convert from EL to EU or EU to EL by flipping a switch on the chas...
The electrified ND electrified solenoid driven lock shipped prior to March 14, 2016 can be converted between fail safe (EL) and fail secure (EU) by swapping out the solenoid, sleeve,...
The new motor driven ND electrified locks shipped after March 14, 2016 do not require a solenoid. The Schlage ND-Series electrified locks shipped prior to March 14, 2016 would have used a...
The Von Duprin 6300 surface mounted electric strike is only available as Fail-Secure.
The sliders are different between the 6211 and 6211WF.  The FS slider part number for the 6211 is 970388 and for the 6211WF is 970387.
Procedure for the L9090EL/EU, L9091EL/EU, L9092EL/EU, L9093EL/EU, L9094EL/EU, L9095EL/EUThese devices have a selectable switch in the upper right corner of chassis.  Simply move the switch to ...
Procedure for the L9080EL/EU and L9082EL/EUTo modify an electrified L9000 from EU to EL or EL to EU move the link pin to the appropriate location indicated below in Figure 1.  
To convert the Von Duprin 6000 series electric strikes from FS to FSE  or from FSE to FS follow these steps: Remove the electric strike face plate. Remove the strike box cover pl...
Part numbers: FS slider, part # 970387 (6211WF/6212WF/6221/6223 only) FS slider, part # 970388 (Except 6211WF/6212WF/6221/6223) FSE slider, part # 970388 (6211WF/6212WF/6221/6223 only) FSE sl...