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This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to light. LEDs are cheaper than photodiodes and ...

Kerala’s Minister for Local Self-Government M.B. Rajesh on Wednesday inaugurated the Pan City LED Street Light project, under which conventional street lights have been replaced with over 40,000 smart ...

IKEA has launched its new Gömpyssling LED light with sensor. It's a motion-activated light which automatically switches on when you open a cupboard or step into a space, then turns itself off after ...