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2. Occupancy sensor - Wikipedia

   en.wikipedia.org/wiki/Occupancy_sensor

   An indoor light switch equipped with PIR-based occupancy sensor [1] An occupancy sensor is an indoor device used to detect the presence of a person. Applications include automatic adjustment of lights or temperature or ventilation systems in response to the quantity of people present. The sensors typically use infrared, ultrasonic, microwave ...

3. Staircase timer - Wikipedia

   en.wikipedia.org/wiki/Staircase_timer

   As PIR sensors are not perfectly reliable a timer is needed to avoid the lights flashing off and on as the occupier moves out of detector range. The timer interval is short though compared to a push-button timer; it times the interval between sightings of the occupier, not the time of occupancy. Such sensors are also used for restrooms.

4. ecobee - Wikipedia

   en.wikipedia.org/wiki/Ecobee

   ecobee is a Canadian-founded home automation company that makes smart thermostats, temperature, and occupancy sensors, smart light switches, smart cameras, and contact sensors. [2] They were acquired by the American company Generac Holdings in 2021.

5. Building automation - Wikipedia

   en.wikipedia.org/wiki/Building_automation

   A temperature sensor in the zone provides feedback to the controller, so it can deliver heating or cooling as needed. If enabled, morning warmup (MWU) mode occurs prior to occupancy. During morning warmup the BAS tries to bring the building to setpoint just in time for occupancy. The BAS often factors in outdoor conditions and historical ...

6. 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 ...

7. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   3 Australian light switches and a "neon" indicator—in a 4-gang wall-plate. The lower switch is in the "on" or "down" position. Two Australian rocker switches (disassembled), together with a cutaway view, and a view of the switch connections An Australian architrave-mounted 2-gang switch plate and switches.