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Using radio transmission: A radio receiver is typically wired or screwed into a fixture or device, wired or otherwise connected to the electrical system of the building or plugged into an outlet. The radio receiver's memory is programmed by any number of means to respond to certain selected "switches" or (more correctly) remote control ...
Display in Rotterdam showing how to use Google Assistant with a smart plug to turn on an electric fan (Dutch: zet de ventilator aan)A smart plug is a power plug and socket (also known as a wall plug, outlet, or electrical connector) which can be fitted between power cords and sockets to function as a remote-controlled power switch.
$38.99 at amazon.com. Wireless Remote Control Electrical Outlet Switch for Lights. Holidays are fun and all until you realize you need to unplug 10 different wires every night to turn off lights ...
The Wemo Switch can be plugged into any home outlet, which can then be controlled from an iOS or Android smartphone running the Wemo App, via home Wi-Fi or mobile phone network. The Wemo Motion Sensor can be placed anywhere, as long as it can access the same Wi-Fi network as the Wemo devices it is intended to control.
A wireless light switch provides remote control of lighting using a hand-held transmitter. While the controlling device may be a unit dedicated to this purpose, increasingly such switches may be controlled by the technology (such as Bluetooth or Wi-Fi) now found in smartphones.
Image credits: randomvarun #12 Wireless Electricity. You know how we get radio, cell service, wi-fi, and television from signals that are broadcast through the air?
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