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Installing The Door Unlock Devices - NEC Xen Topaz System Hardware Manual

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September 2004
NEC Business Solutions Ltd
4. Remount the doorphone unit onto its wall mount bracket and reaffix
the front screw.

2.6 Installing the Door Unlock Devices

Up to 2 Door Unlock Control devices can be connected to the 2PGDU
PCB.
54 -
Installing the Optional Equipment
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