CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. I had never seen a sensor like Aqara's new P100 before, but ...

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Amanda Blum is a freelancer who writes about smart home technology, gardening, and food preservation. Previously, Amanda has worked as a technology strategist specializing in problem solving and ...

The types of magnetic sensors that are currently available. How the magnetic sensors work. Applications for the different magnetic sensors. Position sensors enable a variety of functions and controls ...

Door sensors detect door position (i.e., open or closed) based on the precise gap between the magnet and the reed switch.