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  2. Photoresistor - Wikipedia

    en.wikipedia.org/wiki/Photoresistor

    Three photoresistors with scale in mm Large CdS photocell from a street light. A photoresistor is less light-sensitive than a photodiode or a phototransistor. The latter two components are true semiconductor devices, while a photoresistor is a passive component that does not have a PN-junction. The photoresistivity of any photoresistor may vary ...

  3. Resistive opto-isolator - Wikipedia

    en.wikipedia.org/wiki/Resistive_opto-isolator

    Opto-isolator VTL2C1 with LED input and photoresistor output. Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator [notes 1] or lamp-coupled photocell, [1] is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically ...

  4. Lighting control system - Wikipedia

    en.wikipedia.org/wiki/Lighting_control_system

    Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces. Lighting control systems are sometimes referred to under the term smart lighting. Lighting control systems serve to provide the right amount of light where and when it is needed. [1]

  5. Backyard Upgrade: The Best Outdoor TVs for Sun and Shade - AOL

    www.aol.com/backyard-upgrade-best-outdoor-tvs...

    For premium support please call: 800-290-4726 more ways to reach us

  6. 6 Weatherproof TVs to Turn Your Backyard Into an Outdoor Theater

    www.aol.com/lifestyle/6-weatherproof-tvs-turn...

    We tested over 9 outdoor tvs to find the best ones for your porch, patio, or outdoor lounge. Skip to main content. Lifestyle. 24/7 Help. For premium support please call: 800-290-4726 ...

  7. Photoelectric sensor - Wikipedia

    en.wikipedia.org/wiki/Photoelectric_sensor

    Conceptual through-beam system to detect unauthorized access to a secure door. If the beam is interrupted, the detector triggers an alarm. A photoelectric sensor is a device used to determine the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver.

  8. Twilight switch - Wikipedia

    en.wikipedia.org/wiki/Twilight_switch

    A twilight switch is an electronic component that allows the automatic activation of a lighting circuit when natural light drops in a given environment. Among a large number of uses, the most common is to enable automatic lighting of streets, roads, highways, roads, gardens, courtyards, etc., when sunlight drops below a certain level (e.g.: a ...

  9. Street light - Wikipedia

    en.wikipedia.org/wiki/Street_light

    Outdoor Site-Lighting Performance (OSP) is a method for predicting and measuring three different aspects of light pollution: glow, trespass and glare. [60] Using this method, lighting specifiers can quantify the performance of existing and planned lighting designs and applications to minimize excessive or obtrusive light leaving the boundaries ...

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