what is fail secure

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FSE, EU, Electrically Unlocked
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 E996L-FSE trim is needed if the application requires fail-secure operation from the trim side of the opening. When power is out on Chexit device, E996L-FSE trim will remain locked to ...
Use a normally closed fire alarm as the input to the power supply option board (PS873-2 or PS914-2RS), this will hold the latch retracted.  During a fire alarm, the contact will open, dropping...
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,...
This is not possible as an EL device is an electric latch retraction and requires power to unlock the door thus only available in Fail Secure.
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...