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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]
An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. In the United States, emergency lights are standard in new commercial and high occupancy residential buildings, such as college dormitories , apartments , and hotels .
Review: "The battery operated light is perfect for over my picture. It's super easy to recharge it with the long cord, I never have to take it down and the remote works great to turn it on and off ...
The MagiQuest wand is a battery-powered infrared (IR) remote control device with an LED at the tip. Motion sensors (a spring sensor and a ball-and-tube sensor) inside the wand detect movement and cause the LED to emit a brief series of flashes which is unique to that wand.
Image credits: milwbrewsox #7. My wife and I have this ceiling fan/light in our bedroom in the house we moved into two years ago. It has a remote control for the fan and lights.
Wireless systems, on the other hand, often use battery-powered transmitters which are easier to install and have less expensive start-up costs, but may fail if the batteries are not maintained. Depending on distance and construction materials, one or more wireless repeaters may be required to bring the signal to the alarm panel reliably.