Window sensors are a critical part of any home security system. When cameras fail, a window sensor becomes your last line of defense. Install them on all your windows, and you will know when an ...

In a way, the magic of a soil moisture sensor’s functionality boils down to a simple RC circuit. But of course, in practice there is a bit more to it than that. [rbaron] explains exactly how ...

Your car’s O2 sensor can be cleaned if you’re in a pinch, but cleaning won’t make an old sensor reliable again. Most failing sensors must be replaced.

Stephen is an author at Android Police who covers how-to guides, features, and in-depth explainers on various topics. He joined the team in late 2021, bringing his strong technical background in ...