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Some wall switch modules offer a feature called local dimming. Ordinarily, the local push button of a wall switch module simply offers on/off control with no possibility of locally dimming the controlled lamp. If local dimming is offered, holding down the push button will cause the lamp to cycle through its brightness range.
frame dimming: adjusts the brightness of the entire backlight based on the content displayed, as if local dimming was supported but only with a single zone; local dimming: multiple vertical or horizontal zones are individually controlled; direct-lit (DLED) or full-array: LEDs form an array directly behind the screen at equally spaced intervals.
Since semiconductor or solid-state dimmers switch quickly between a low resistance "on" state and a high resistance "off" state, they dissipate very little power compared with the controlled load. Most recently, software programmable internal dimmers can use signals from the same switch that turns lights on and off to control dimming.
The switch is controlled by a PWM (Pulse Width Modulation) signal, which alternately turns the switch on and off at a rapid rate. The relative proportion of off time vs. on time determines brightness. For example, if the switch is off 10% of the time, the resulting control signal would be the equivalent of 1 V produced with a variable resistor.
Dimming of street lights where it was "practical and safe to do so," saving £100k per year Price rises for gym sessions and swimming at leisure centres, saving £297k per year
A scene controller or scene switch is a switch which can operate appliances and lights remote but not locally. It can send macros to set light levels and switch appliances on or off. Scene controllers are typically used to perform activities. For example, for watching TV lights are dimmed, the window blinds are closed and the TV is turned on.
Power On (IEC 60417-5007) and Power Off (IEC 60417-5008) symbols are used to indicate positions of the rocker switch Power button marked with Standby symbol (IEC 60417-5009) turns the device on or off without fully disconnecting power supply. A power symbol is a symbol indicating that a control activates or deactivates a particular device.
Luck. Fate. Blessing. A glitch in the matrix. Or, if you’re more skeptical, just a coincidence.. It’s a phenomenon that, from a statistical perspective, is random and meaningless.