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A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.
Intermatic Incorporated is an American manufacturer of time switches headquartered in Spring Grove, Illinois. Intermatic was founded in 1891 in Chicago, Illinois as the International Register Company to produce fare registers .
Later manual-start clocks had ratchets or other linkages which prevented backwards starting. The invention of the shaded-pole motor allowed self-starting clocks to be made, but since the clock would then restart after a power outage, the clock would give incorrect time instead of being stopped at the time of power interruption.
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On field tests the Whisper Node was able to communicate on distances over 1 km line-of-sight and can run for years on battery, making a great platform for remote sensing and IoT applications. ZB1 [208] An Arduino-compatible board that includes a Zigbee radio . The ZB1 can be powered by USB, a wall adapter or an external battery source.
Rail transport terms are a form of technical terminology applied to railways. Although many terms are uniform across different nations and companies, they are by no means universal, with differences often originating from parallel development of rail transport systems in different parts of the world, and in the national origins of the engineers and managers who built the inaugural rail ...
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