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  2. Time switch - Wikipedia

    en.wikipedia.org/wiki/Time_switch

    The timer may switch equipment on, off, or both, at a preset time or times, after a preset interval, or cyclically. A countdown time switch switches power, usually off, after a preset time. A cyclical timer switches equipment both on and off at preset times over a period, then repeats the cycle; the period is usually 24 hours or 7 days.

  3. Photo-lab timer - Wikipedia

    en.wikipedia.org/wiki/Photo-lab_timer

    Three digits, display amber digital. Start button preparation screen. Time step in the time cycle with countdown to zero. Button to stop and resume the countdown of the remaining running time as well as refraction measurement with direct time reset. It can also be used as a manual exposure timer with setting the desired time using the up/down ...

  4. Fully automatic time - Wikipedia

    en.wikipedia.org/wiki/Fully_automatic_time

    Light beam timing system (the two lenses extended to the right of the stand) Fully automatic time (abbreviated FAT) is a form of race timing in which the clock is automatically activated by the starting device, and the finish time is either automatically recorded, or timed by analysis of a photo finish.

  5. Timer - Wikipedia

    en.wikipedia.org/wiki/Timer

    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.

  6. Lighting control system - Wikipedia

    en.wikipedia.org/wiki/Lighting_control_system

    It also has a timer that signals the electronic control unit after a set period of inactivity. The control unit uses this signal to activate the switch/relay to turn equipment on or off. For lighting applications, there are three main sensor types: passive infrared , ultrasonic , [ 8 ] and hybrid.

  7. Staircase timer - Wikipedia

    en.wikipedia.org/wiki/Staircase_timer

    DIN rail mounted electronic lighting timer. An electronic timer allow simple push-buttons to be used. One timer is installed controlling the lights and any number of push-buttons, without pneumatic timers and connected in parallel, are used to trigger it. [1] [4] With many push-buttons, the cost savings for equipment may be substantial.

  8. Self-timer - Wikipedia

    en.wikipedia.org/wiki/Self-timer

    A manual self-timer, 2011. A manual self-timer mounted on a film camera, 2011. A self-timer drive mode button on a Canon digital camera, 2008. Robert Faries: Shutter tripper for Camera's, US Patent 690,939, January 14, 1902. A self-timer is a device on a camera that gives a delay between pressing the shutter release and the shutter's firing. It ...

  9. Programmable interval timer - Wikipedia

    en.wikipedia.org/wiki/Programmable_Interval_Timer

    Timer 0 is used by Microsoft Windows (uniprocessor) and Linux as a system timer, timer 1 was historically used for dynamic random access memory refreshes and timer 2 for the PC speaker. [2] The LAPIC in newer Intel systems offers a higher-resolution (one microsecond) timer. [3]