Figure 1a shows a slotted optical switch. An LED is mounted in a plastic housing, facing a phototransistor, but separated by a gap. If something moves into the gap, it blocks the light path between ...

Xiaomi Motion Sensor Night Light 2 is a versatile, smart lighting solution that makes your nighttime navigation safe and comfortable. Its innovative features, combined with a user-friendly design, ...

October 30, 2018 Add as a preferred source on Google Add as a preferred source on Google We’ve never run a vape trick on Lifehacker. Until today. It’s a pretty specific trick: if you’re locked outside ...

Posts from this author will be added to your daily email digest and your homepage feed. is a Senior Producer on Decoder. Previously, he reported on the technology and gaming industries for more than a ...

Kangaroo’s latest motion sensor adds entry detection to the mix, but its lack of geofencing capabilities or support for any type of security camera makes it tough to recommend. It’s one thing to snap ...

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 ...

Variable reluctance (VR) sensors transform mechanical motion into electrical signals by exploiting changes in magnetic flux. As a ferromagnetic target moves past the sensor’s pole piece, the ...