Gauging the amount of light that's in a scene is one of the most fundamental and important skills for a photographer to have.

The SwitchBot Meter Pro CO2 Monitor isn’t HomeKit-native, but with SwitchBot Hub 2, it works with Matter. Here’s what it can do and how to integrate it.

You'll often be able to see your energy use and how much you are spending in your online account or through your energy supplier's app ... meter and gas smart meter. Most have a button to illuminate ...