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 ...

Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

Although newer homes have wall switches for most overhead lighting, fixtures in older houses may be controlled by pull chains from the light. Trying to find that pull chain in the dark can be ...