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What is a presence sensor?
A presence, motion or Pir sensor is a switch that is activated when detects motion in a certain area. They have the advantage of comfort and light saving, since there is no need to turn on the lights, and also, they remain off when there is no one in the room.
Which motion detector to buy?
If you are thinking of buying a motion detector, it is very important to choose the motion detector that best suits your needs. We leave you this link to read about the importance of the choice of sensor for energy savings.

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