At first I was spotting table as too expensive for me appeared the timer for a "pure timer function". And when they want, compared to a mechanical clock, is silent, I do not always or in a digital button on the fiddle, I ordered this. The functionality is described quickly: Set on the side of the running time (1h / 2h / 4h / ON) and press up the "soft-touch" button. That's it Switching works fine. For my purposes (I have active Lautpsrecher connected) optimal