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2. 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.

3. Mechanically powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Mechanically_powered...

   The best designs use a supercapacitor instead of a rechargeable battery, since these have a longer working life than a battery. This, along with the long-life light-emitting diode which does not burn out like an incandescent bulb, give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is ...

4. Electricity on Shabbat - Wikipedia

   en.wikipedia.org/wiki/Electricity_on_Shabbat

   However, it is prohibited to knowingly walk past a motion sensor which switches on a light on Shabbat if the street or place is dark and because the turning on of the light substantively benefits the person, and it is a pesik reisha denicha leih (Aramaic: פסיק רישא דניחא ליה, loose translation: "an inevitable resultant action ...

5. Comparison of domestic robots - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_domestic_robots

   Cliff IR, Optical Floor Sensor, Obstacle IR Sensors, UV Bulb, Dirt Detection Sensors, Battery Status Sensors, RF Remote, Gyro and Accelerometer Zig Zag, Spiral, Wall-to-wall and Auto Random Tile, Marble, Wood, Low-mid carpets, Linoleum, Glass Yes Un­known Milagrow RedHawk [4] 2011 [5] Very High Yes Yes

6. Passive infrared sensor - Wikipedia

   en.wikipedia.org/wiki/Passive_infrared_sensor

   A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.

7. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...