Normally these speed sensors work with radar or laser technology to bounce back radio waves or IR light from objects and calculate speed based on time taken for the light or wave to reflect. In this ...

The eMotion Ultra is a Home Assistant-compatible 60GHz mmWave radar presence sensor with a built-in IR blaster with a 15-meter range, a brightness sensor, and a temperature/humidity sensor. It is ...

In fact, the original Nintendo Switch has an IR sensor of its own, but only on the right Joy-Con controller. However, leaks appear to suggest that this time around, each Joy-Con has a sensor of ...