Contrast Adjustment - Siemens 7LF4 542-0 Instrucciones De Operación

Contrast adjustment

1 h-Test
When this function is activated, the outputs are switched on for one hour.
After one hour, the time switch returns automatically to the programmed mode.
Data key
Load the programs of the time switch on to a data key (WRITE KEY)
Warning! all programs stored on the data key will be overwritten.
Load the programs from the data key to the time switch (READ KEY)
Warning! all programs stored in the time switch will be overwritten.
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