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Will the PS900-2 RS operate the Von Duprin QEL device?

See below for QEL device requirements: 

  • QEL devices shipped prior to 7/23/12 must have the 2Q option board for the communication link between the power supply and the exit device.  
    • Do not need the PS914, can use the PS902 with the 2Q board.
  • QEL+ devices were launched on 7/23/12 use 900-2RS or 900-4RL option boards.
  • QELA devices were launched on 12/8/2014 use the 900-2RS or 900-4RL option boards.


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