What is the difference between a presence and motion sensor?

January 22, 2018

The little but important differences…Also, what is actually an occupancy sensor?



Not only system integrators but also home owners are often wondering – What is the difference between a detector for presence, movement and occupancy? Unfortunately, both terms are often used in the non-correct manner, which is why this article would like to explain you the major differences between sensors for “Motion” and “Presence”.


Both sensors come from the same family of devices. However, due to (or rather thanks to) the technical evolution, both kinds of sensors started to develop in separate ways, creating two new ways of creating telegrams and sending them on the bus. Therefore, it is of most importance to understand the difference:



Motion Sensors: Detecting walking movements<