Tagged Questions

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What are the top recommendations for a DIY Security Alarm? [closed]

There are several out there. I preferably would like one that alerts me if it is triggered but it would be nice to see all options available in systems.
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How to install 230V Light with Light-activated-resistor?

I am trying to set up light-activated-resistors that activate a light during dark hours. I have bought a ready Chinese thing that apparently contain a driver to change from AC to proper DC output for ...