exit device control

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To keep the Von Duprin electric latch retraction EL or QELA exit device dogged (retracted) all day, have your access control, Key pad, key switch, fire alarm contact or any other signals ...
The 388 Cylinder Control is required for the NL-OP function on a 33A/35A series exit devices. The 110NL is used on 22 and 98/99 series exit devices not 33/35A series devices.
Following could cause the 900-2RS board not to operate: If 900-2RS board is not plugged into the PS914 mother board. If PS914 power supply is selected for 12VDC instead of 24VDC. If control co...