Lamps very easy to install and activate. However, there is a small "trouble" with its operation. Indeed, after having activated by clicking the button on / off, the lamp is put in charge. Upon nightfall, it actually turned on. It lights in more than correct. But the problem is that it does not go out. The motion detector becomes unnecessary.
The solution I found is this: once on, I turn it off and turn back on and there she works. It goes out after 30 seconds and again when I pass. Perfect will you tell me? Well no, because I have to do this every day for the next day, she never goes out again. There is therefore a "small problem"; which may explain its price drop.