Here is a simple general-purpose security alarm circuit built on the Arduino platform. It brings up an obtrusive alert signal when an intrusion/theft attempt is observed by its front-end sensor. In ...

Just about everywhere you go, there’s a reed switch nearby that’s quietly going about its work. Reed switches are so ubiquitous that you’re probably never more than a few feet away from one at any ...

A new series of magnetically-operated reed proximity switches are said to be suitable replacements for mechanical switches, especially in wet and dirty applications. The MK4/5/13 Series reed sensors ...