Once it gets dark, they will automatically go into the Twilight mode. Approximately 9-12 close to one another mounted (3 rows of 3-4 pieces) LEDs go on easily. But as soon as you come in range of the motion, which go 16 to full power as long as registered to no more movement. In front door area state it was here at least times for 6 hours - then I went to bed; o).
From the brightness and viewing angle from her, I find it best on doors or hung as high as half way (auxiliary) lighting. My sample images (yes, not great, just wanted to show the illumination power, but am not a photo expert and have only a cell phone photo; o)) to show our pitch-dark staircase (1 x half-light, 1 x fully illuminated). I think that, all the way down radiating lamps, for example ASIN B00LN0RDBA, but a little better, because glare.
The light is cold white, not the bluish continuously.
The lamp is off on the back of a lever to turn on /. I find better than the pressure switch, the ausluscheln press after a few times.