eQ-3 Homematic HMW-IO-12-Sw7-DR Installations- Und Bedienungsanleitung Seite 31

ty on the terminals.
Note that actual buttons (normally open) and
no rocker switches or push-button switches are
used in the button input circuits. Connect each
of the buttons between GND (terminal 1.8) and
the respective button input (terminal S1, ...).
The maximum wire length from button to
module is different depending on the wire used.
A length of 50 m should never be exceeded
however.
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