Mediola 2 channel wireless/door/window contact FS20 TFK2 652-77 Data Sheet

The application remains the same as for version 1, but now the contacts are installed so that
both switching contacts are closed in the normal position (both window sashes closed).

If one window sash is opened and then closed again, no reaction is triggered.

A power-off command is not sent until both window sashes are opened. If one of the two
window sashes is subsequently closed, a power-on command is transmitted.

In this case the device is always switched on, as long as at least one window sash is closed.

The switching patterns may be reversed by laying the plug jumpers accordingly, allowing the
switching pattern to be tailored to the application purpose.

Several normally closed or active normally open contacts with sequential or parallel switching,
depending on the application purpose, may serve as an external contact.

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For this it should be noted that the internal contacts are always parallel to the
external contacts.

All contacts are closed, one is opened -> open

All contacts except for one are closed, that one closes -> close

All contacts except for one are open, this opens -> open

All contacts are open, one closes -> close