enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Passive infrared sensor - Wikipedia

   en.wikipedia.org/wiki/Passive_infrared_sensor

   A PIR sensor can detect changes in the amount of infrared radiation impinging upon it, which varies depending on the temperature and surface characteristics of the objects in front of the sensor. [2] When an object, such as a person, passes in front of the background, such as a wall, the temperature at that point in the sensor's field of view ...

3. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_alarm

   Reed Switch. The hermetically sealed reed switch is a common type of two-piece sensor. This switch operates with an electrically conductive switch that is either normally open or normally closed when under the influence of a magnetic field in respect to proximity to the second piece, which contains a magnet. When the magnet moves away from the ...

4. Motion detector - Wikipedia

   en.wikipedia.org/wiki/Motion_detector

   A motion detector attached to an outdoor, automatic light. A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection).Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.

5. Occupancy sensor - Wikipedia

   en.wikipedia.org/wiki/Occupancy_sensor

   Occupancy sensor types include: PIR sensors, which work on heat difference detection, measuring infrared radiation.Inside the device is a pyroelectric sensor which can detect the sudden presence of objects (such as humans) who radiate a temperature different from the temperature of the background, such as the room temperature of a wall.

6. Photoelectric sensor - Wikipedia

   en.wikipedia.org/wiki/Photoelectric_sensor

   Remote photoelectric sensors used for remote sensing contain only the optical components of a sensor. The circuitry for power input, amplification, and output switching is located elsewhere, typically in a control panel. This allows the sensor, itself, to be very small. Also, the controls for the sensor are more accessible, since they may be ...

7. Luigi Mangione Plotted to 'Wack' an Insurance CEO for ... - AOL

   www.aol.com/lifestyle/luigi-mangione-plotted...

   Weeks before allegedly shooting UnitedHealthcare CEO Brian Thompson, Luigi Mangione wrote that the company's investor conference was a perfect place to "wack" a top insurance executive, federal ...

8. US begins new year on high alert following New Orleans attack ...

   www.aol.com/news/us-begins-high-alert-following...

   WASHINGTON/NEW ORLEANS (Reuters) -Law-enforcement officials in U.S. cities were beefing up security on Thursday after a deadly attack in New Orleans and an explosion outside a Trump hotel in Las ...

9. Chip, Chip, Hooray! It's National Cookie Day - AOL

   www.aol.com/chip-chip-hooray-national-cookie...

   History of National Cookie Day. National Cookie Day was first declared by none other than Sesame Street‘s Cookie Monster in 1976.The blue Muppet put it on the calendar on November 26, 1976 and ...