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The central concept of the system is a unique number, a PlusCode, assigned to each program, and published in television listings in newspapers and magazines (such as TV Guide). To record a program, the code number is taken from the newspaper and input into the video recorder, which would then record on the correct channel at the correct time.
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.
Combined PIR sensor and lightswitch. PIR sensors may be used to control lighting in such areas. They avoid the need to press a push-button but otherwise operate as for electronic timers. As PIR sensors are not perfectly reliable a timer is needed to avoid the lights flashing off and on as the occupier moves out of detector range.
Also, keep in mind that ignition is based solely on the amount of natural light present and not on the height of the sun, so "unwanted ignition" may occur, for example in the presence of compact clouds associated with a significant drop in ambient light on the sensor (e.g., when there is a storm). To avoid this, twilight switches can be ...
A complete sensor consists of a motion detector, an electronic control unit, and a controllable switch/relay. The detector senses motion and determines whether there are occupants in the space. [9] It also has a timer that signals the electronic control unit after a set period of inactivity.
You can roast potatoes or you can bake them. Same with chicken.Vegetables too to some extent, although the jury seems in on the superiority of roasted root vegetables with their crispy ...
The term northern lights refers to the natural display of pink and green hues in the sky that occurs when charged particles from a coronal mass ejection interact with Earth's magnetic field ...
Remote Device Management (RDM) is an addition to the DMX512 control protocol for stage lighting equipment, introduced in 2006. DMX512 was developed in the late 1980s as a standard protocol for lighting consoles to communicate with dimmers, but has since been used for more complex applications, including the control of intelligent lighting fixtures.