Proximity, Presence
- Alarm sensor
- Doppler radar
- Motion detector
- Occupancy sensor
- Proximity sensor
- Passive infrared sensor
- Reed switch
- Stud finder
- Triangulation sensor
- Touch switch
- Wired glove
Read more about this topic: List Of Sensors
Famous quotes containing the word presence:
“O wild West Wind, thou breath of Autumn’s being,
Thou, from whose unseen presence the leaves dead
Are driven, like ghosts from an enchanter fleeing,
Yellow, and black, and pale, and hectic red,
Pestilence-stricken multitudes.”
—Percy Bysshe Shelley (1792–1822)