apparent reception demolition - annoying beep !!

If the device sends, the reception quality is good (no noise) and also the coverage is satisfactory. Even in the basement with thick concrete walls is receiving. The trigger sensitivity is, however, very weak. Our first device we have exchanged after one week since our newborn in silent shrines the device could not trigger even at a distance of 0.5 m times. The current device is already working better, but only satisfactory if the device is not removed more than 0.5 meters from the bed is (even with sensitivity set to maximum). According to Vivanco, it may even happen that a device is factory set incorrectly. In addition, you do not want to be every "disturbed" if the baby turns only (statement of Hotline). But why then does the device a sensitivity adjustment

The absolute devaluation however leads:
The device is equipped with a high-reach or reception control.
In our unit, however, breaks now day after about 1-2 hours of operation apparently the reception from, even if the device is only available in the next room. This is then quiet Animal T with an annoying beep.
Then off device and on again and the reception seems to be back. This is then repeated with different time intervals. Some evenings then every minute !!!
At first we thought to insufficient battery capacity, but the error in the charging station also occurs without battery in the device.
This seems to be an isolated case (see other reviews).
Too bad, the concept of Vivanco is very good, but the quality could not convince us
What good electrosmog reduced if the unit is not working.
The unit we can not recommend therefore unfortunately.