The Pflegeruf set does what it should. Good reception on two floors (an old farmhouse) away. Proposes reliable alarm when pressing the red alarm button. The "button-clock" is very easy. Since the clock is carried in my case of an elderly person, it might be useful to offer even those with a velcro / produce, which would make it easier to put on the clock. But otherwise makes the set, what it should do. And this in itself is very reassuring for all roommates who take care of the day and night at this person.