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7.3 DOORPHONE AND DOOR LOCK RELEASE (See FIGURE 7-3)
System users have the capability of communicating with an optional door phone
when the N X - D P H / P A G I N G board is installed. A maximum of two door phones
may be installed per system.
To connect the door phone, plug a two-pair modular cable into the connector on
the KSU marked DOOR1 or DOOR2.
To connect the customer-provided electric door lock unit for control of the door
lock release mechanism, plug a one-pair modular cable into the connector on the
KSU marked LOCKER1 or LOCKER2.
FIGURE 7-3 CONNECTING DOOR PHONE & DOOR LOCK RELEASE
NX-SERIES HYBRID KEY SYSTEM INSTALLATION SECTION
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