This light dependent switch (dark activated switch) was constructed around the operation of a ORP12 photocell where light is the most important factor. Photocell – a type of resistor wherein the ...

There are a wide range of applications for light sensitive switches: lighting, entrance door, automatic staircase, automatic opening of doors to the action of a ray of light, alarm systems, etc… Many ...

In theory, a LED light should last for ten years or so, unlike the typical 4W incandescent lamps used in night lights that seem to burn out in only a few months. But as engineer and founder of the ...