A few weeks is the Spylux in our application. The removable base of the lamp can attach with 2 screws, stick it or use the magnets. The light-sensitivity can not be changed, but the devices are well adjusted. In our case, the light is sufficient to achieve all the doors in the hallway / corridor - very pleasant and helpful because hallway / corridor are illuminated with energy-saving lamps. The lamp is precise and comes with little battery power of the light is strong and a reflector distributes the light effectively. Another unit is in our caravan. "Good" lamp. | December 2009 - the batteries still hold, the unit accurately - TOP!