eQ-3 HomeMatic HM-LC-Sw1-FM Installations- Und Bedienungsanleitung Seite 39

No operational elements are actually located on the
devices. For teaching directly without Homematic
Centre, you must (even if only temporarily) connect
buttons!
The control inputs are connected to mains power.
Use only mains power capable buttons and wiring!
Only connect buttons to the inputs, no switches!
These would cause faulty functionality of the device
(teach mode)!
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