We ran more than 1,000km to test top-rated GPS fitness watches including Apple, Garmin and the best for beginners ...

Looking for the best 2TB external hard drive? Compare the top 4 options from Seagate, Toshiba, and others, based on ...

If you read about Hall effect sensors — the usual way to detect and measure magnetic fields these days — it sounds ...

This device from SwitchBot measures temperature, humidity, carbon dioxide levels and more to keep my home safe during the ...

Oxygen is the second most abundant element in Earth's atmosphere. Although critical for aerobic respiration, it also poses significant dangers to life. The reduction of molecular oxygen to water by ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...