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On its own, the Switchmate can be operated from your iOS/Android phone over Bluetooth LE at a range of about 200 feet. Add Switchmate’s hub into the mix, however, and the switches pick up WiFi ...
A reed relay [i] is a type of relay that uses an electromagnet to control one or more reed switches. The contacts are of magnetic material and the electromagnet acts directly on them without requiring an armature to move them. Sealed in a long, narrow glass tube, the contacts are protected from corrosion. The glass envelope may contain multiple ...
The reed switch [i] is an electromechanical switch operated by an applied magnetic field. It was invented in 1922 by professor Valentin Kovalenkov at the Petrograd Electrotechnical University, [1] and later evolved at Bell Telephone Laboratories in 1936 by Walter B. Ellwood into the reed relay.
Electromagnetically induced transparency. The effect of EIT on a typical absorption line. A weak probe normally experiences absorption shown in blue. A second coupling beam induces EIT and creates a "window" in the absorption region (red). This plot is a computer simulation of EIT in an InAs/GaAs quantum dot.
For outdoor use, we recommend the Christmas Lights Etc Kringle Traditions Wide-Angle 5mm Outdoor LED Christmas Tree Lights, available in white, multicolor, or single color in a variety of lengths ...
Oxford Street was the first to switch on its Christmas lights in London, officially beginning the countdown to the big day. Thousands of brilliant white stars blanket the sky, and the view dazzled ...
The Wemo family also includes light switches and dimmers, so it's easy to expand your system. The Lutron Caséta Smart Lighting Lamp Dimmer costs more than most smart plugs, but it has two outlets ...
Tile Mate. There are plenty of Bluetooth trackers available now but arguably the most universal ones come from Tile. The Tile Mate is the company’s classic, keyring-friendly tracker that lets ...
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