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:
“When the whole world is writing letters, it’s easy to lap into the quiet within, tell the story of an hour, keep alive the narrating inner life. To be alone in the presence of one’s thought is not a value, only a common practice.”
—Vivian Gornick (b. 1935)