That did the trick

It's very small LED light are a little cheap but finally unpacking well they fulfill their function. I needed a spot lighting points the night because of a too remote switch and only one of these lamps is sufficient to illuminate the hall to the bathroom. They do not have a great power, but it suits me perfectly because change from black to bright light at night is rather unpleasant.
The other 2 lamps help me to better see the bottom of my kitchen corner cupboard under the worktop.
The 3 batteries per lamp is not provided, hope they last long. The opening / closing system is solid and the adhesive on the back of Led clings well.