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Alarm buttons

External alarm buttons

Only voltage-free alarm buttons may be connected to the NRT 1 XS.
These may be either normally closed contacts (NO) or normally open contacts (NC).

External alarm button with normally open contact (NO):

schließer an xs.drawio.png

External alarm button with normally closed contact (NC):

image-20250904-064222.png

Alarm button in stainless-steel front panel

Alarm buttons integrated in the optional stainless-steel front panels are connected directly to the NRT.
After mounting the base unit on the stainless-steel front panel, connect the alarm button wires to the base unit.

image-20250904-064426.png

1

Speaker connector.
The speaker is already connected ex works.

2

Connector for the alarm button.
Use the black/yellow connection cable of the button.

3

Connector for the alarm button illumination.
Use the red/black connection cable of the button.