Can QEL device be fail safe

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Improper mechanical adjustment or QEL calibration could cause the QEL cycle three times with solid LED and not work. First check mechanical adjustment on vertical rods or mortise lock device and co...
For most exit devices, please refer to the specific device series catalog for minimum door opening width the device can be cut down to fit.   Be aware that some device options, frame...
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...
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.
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 ...
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.  
The sliders are different between the 6211 and 6211WF.   The FS slider part number for the 6211 is 090591 The  6211WF FS slider is 090798.