If you’re curious about how traffic light sensors work, or just want to keep the flow of green lights and good vibes rolling, here’s what to know.

It just uses an IR LED and some fancy optics. How it Works The simple explanation for how these sensors work is that they bounce light off a target and measure how long it takes to see the reflection.

Outdoor light motion sensors can add a healthy level of security to your home. Here's how to set them up.

Ambient light sensors can reveal your device activity. How big a threat is it? For now, there's no reason for concern, but that could change in coming years.

The smart lighting company launches new Sense Plus “learning” smart switches and Nanoleaf Skylight — modular panels designed to light up your ceiling.

It works by using the ambient light sensor and machine learning to make these adjustments for you automatically. KEY SECTIONS What is Android Adaptive Brightness, and how does it work?