Tricky to install and random detection

The installation of this detector is not the easiest. Thus, the domino electrical connection is really poor and the son are hard to insert, especially when installed in the ceiling. The domino screws also tend to fall release. The different settings (operating range of the radar, brightness threshold, duration of the ignition) are not facilitated by the small drives sketchy. We need to try several times to find the correct setting. If a problem occurs and before yielding a very legitimate irritation, try decreasing the brightness of the room in order to trigger the system. The translucent portion is glass and inspires confidence. It is very difficult to open.

Moreover, after a few months of use, its detection has become random and very painful use. It is now no longer used in manual function as a conventional ceiling. Purchase disappointing despite a promising start.