Positives: timely delivery, packaging okay, display funtioniert. Unfortunately, difficulties arose when setting: I wanted to use the switch in order to burglar-deterrent in the interior. For this, the switch should indeed concern in the dark, late at night but also again. The manual indicated in pictures as the switch is programmed to do so. After what was there, my switch would have to work what he did not do, unfortunately. I called the company ELRO at least you could (with a magnifying glass) recognize a phone number in addition to the manual very briefly held. There I was advised a friendly man, but could not help. Quite the contrary, because he gave my questions. But he claimed that one - Can operate the switch only outside, because there the Lichtverhätlnisse be different than in the office. In the office of the sensor would turn on the light too early. For me, however, the opposite was the case. The switch made from the desk lamp, no matter how light or dark it was in spite of adjusted time window. - Can use the Schlater only as either a timer or a twilight switch, but not in combination. Strangely only that the operating instructions and the comments from other customers, the opposite is documented. - By the way, was an opportunity to combine the two, also been my reason to buy, because I have already timers. This interested the friendly staff terrible. He recommended that I taped off the sensor and to use the device as a timer.
