TRB141 input/output function


I have a TRB141 router and would like to use the input/output function.

I have connected output 14 (3.8V) to the input of the sensor and connected the output of the sensor to input 1 (Activ Input Wet). The sensor switches potential free.

But no matter what I do, input 14 is always at high level, even when no cable is connected.

Can anyone tell me how to do the wiring correctly?

The firmware version is TRB1_R_00.07.05.2

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