Does not as it should

When unpacking, I was happy, nice small and unobtrusive.
After I had the lights (ie a total of 8 required) supplied with 4 AAA batteries, which are not included, also arrived promptly, the disillusionment. On motion, such as when passing, as can be seen on one of the pictures here, the motion detector does not work definitely. Even if one past the sensor "waving" hand done ..... nothing! Only when I hold my hand for about 2 seconds in front of the sensor, lit the small built LED diode (approximately 20 seconds). This is quite bright for their size, bring only unfortunately not so much when the system is not working. On the batteries used it can not be, because I have several, new, tried.

Because I know how I bring the lamps for lighting, I built in my DVD / Blu-ray cabinet and have found at least one use and can be awarded with benevolence even 2 stars. As aisle lighting the product of Mr Beams not suitable!