Are power suppliers required for QEL devices

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Use the PS902-2RS power supply with LCN auto operator on single door, PS904-2RS power supply on double door and PS904/906-2RS-2RS for 2 pair of QELA is required for basic operation with a...
No, you can only add one 900-2Q option board to the PS902 power supply and 900-2Q only can support two QEL devices.
Yes the Von Duprin QEL exit device retracts the latch bolt and pushpad. Pushpad and latch bolt stay retracted as long as power is applied to the QEL exit device.
The old MPB842 power supply will power up to two EL electric panic bars but will not power the QEL devices.  A defective potted module inside the electric panic bar or defective power supply coul...
The QEL exit devices that were shipped prior to August, 2012 will only communicate to the PS873 with 871-2Q option board or PS900 series with 900-2Q option board. If you...
Kits are available per the following criteria.    Product Bulletin Required Series 94 or 95 Fire or Panic 3FT/4FT or 2 ft 6 in / 2 ft 10 in Finish  Optional LX...
Product Ordered after 7/10/2012 - Product identified by label on QEL motor You no longer need to use the 900-2Q option board (no longer available) with the PS900 power supplies to ...
Product Ordered before 7/10/2012 - Product identified by no label on QEL motor. You must use the 900-2Q option board with the PS900 power supplies to operate the QEL devices.  The attached ta...