2N Door intercom 2N Helios - Manual, 1322 v3.0 - Manual (Page 34)

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2.5 Extending Module Connection
2N ® Helios features an easy installation of extending button modules. Extending
modules are connected using a single cable (included in every extender delivery) in a
chain pattern (every additional unit is connected with the previous one). Each
extending module has two connectors – an input connector (for connection towards
the 2N
® Helios basic unit) and an output connector (for connection of another, more
remote unit). Be sure to maintain the correct orientation of the units and avoid
connector mismatch to ensure a proper function of the device!
Module Cable Interconnection
 The cable is included in every extending module delivery. Both its ends are
the same. Configuration is 1:1. Connectors cannot be shifted or inserted
conversely because they are equipped with a so-called key.
 The basic unit is always on the left. Extenders are chain-connected, i.e.
each is linked with its neighbour.
 The cable cannot be driven through the box interconnecting holes until the
boxes have been connected (see subsection 2.3 Mounting – Mechanical
Installation).
Basic unit Extender unit Removed upper part of
(open) (bottom part) extender module
Fig.: 8-Button Extender Module Connection to Basic Unit
Connector for next extender module
connection