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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.
In larger lighting systems, for example warehouses or outdoor lighting systems, the required current may be too high for a manual switch. In these systems light switches control lighting contactors , a relay that allows the manual light switch to operate on a lower current, with smaller wiring than would be required in the main lighting circuit.
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 January 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...
A typical kitchen timer. A timer or countdown timer is a type of clock that starts from a specified time duration and stops upon reaching 00:00. An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software.
In the years that followed, the company grew and began making the entire clock unit. Lux Clock produced clocks until 1941, at which time they made war related products. Clock production resumed after the war, and in 1954 a plant was established in Lebanon, Tennessee. By 1959 a Lux Time Ltd. facility was built in Ontario, Canada.
The KosherSwitch (a.k.a. "Kosher Switch", "Shabbos switch", "Shabbat switch") is a wall switch marketed to the observant Jewish market and institutions servicing this market, as a means of controlling electricity on-demand on Shabbat and Jewish holidays in a manner that is permissible according to some Orthodox authorities, [1] though some ...
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