We put the motion as a replacement for conventional light switch, they facilitate our work very.
In the basement are the washer and dryer. Ergo it often comes with a tub full of laundry this way and has no more free to operate the light switch hand. The problem there is no longer with the motion. It is very pleasant and has a touch of luxury that the lighting when entering the cellar automatically comes on and goes off shortly after leaving the cellar.
The same is true for the motion in the garden. It ensures that the road to firewood is always well lit. By the way, the motion detector can also make a small contribution to burglary prevention, because we know that hate burglar automatically aspiring lighting.
It's great, it is also that you can not forget to turn off the light. So the motion contribute to save electricity costs.
Installation is relatively simple. I myself am a trained electrician and had naturally no problem, but also for someone who is not so well versed in the matter, it will be possible, three wires (L1, N, lamp switch wire) to connect properly. In the manufacturer's instructions all is well described.
By motion existing light switches are obsolete and can be dismantled.
Our motion sensors have been three years in operation and perform trouble-free work.
I think this is value for money for very good and can recommend buying.