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2. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   The toggle light switch was invented in 1916 by William J. Newton. [2] As a component of an electrical wiring or home wiring system, the installation of light switches is regulated by some authority concerned with safety and standards. In different countries the standard dimensions of the wall mounting hardware (boxes, plates, etc.) may differ.

3. Electronic switch - Wikipedia

   en.wikipedia.org/wiki/Electronic_switch

   The most widely used electronic switch in digital circuits is the metal–oxide–semiconductor field-effect transistor (MOSFET). [2] The analogue switch uses two MOSFET transistors in a transmission gate arrangement as a switch that works much like a relay, with some advantages and several limitations compared to an electromechanical relay.

4. Switch - Wikipedia

   en.wikipedia.org/wiki/Switch

   A toggle DIP switch with four inputs and outputs Bank of toggle switches on a Data General Nova minicomputer front panel Toggle switches with the shared cover preventing certain forbidden combinations. A toggle switch or tumbler switch is a class of electrical switches that are manually actuated by a mechanical lever, handle, or rocking mechanism.

5. Pull switch - Wikipedia

   en.wikipedia.org/wiki/Pull_switch

   The most common use of a pull switch is to operate a ceiling electric light.The ceiling fan and mechanical wall fans are also appliances often operated by pull switches. . Pull switches may be either two-position (open or closed) or multi-position (allowing for different fan speeds or levels of illuminati

6. Wireless light switch - Wikipedia

   en.wikipedia.org/wiki/Wireless_light_switch

   Dimmer light switch with RF-based remote control [1] A wireless light switch is a light switch that commands a light or home appliance to turn itself off or on, instead of interrupting the power line going to the light fixture. There are different ways to communicate between the switch and the fixture: [2]

7. Lighting control system - Wikipedia

   en.wikipedia.org/wiki/Lighting_control_system

   It also has a timer that signals the electronic control unit after a set period of inactivity. The control unit uses this signal to activate the switch/relay to turn equipment on or off. For lighting applications, there are three main sensor types: passive infrared, ultrasonic, [8] and hybrid.