The SGP30 sensor measures two different types of gases: volatile organic compounds (like hydrocarbons) and equivalent carbon dioxide (H2 level is used as a proxy for this). The sensor does some nifty real-time baseline compensation to give you the most accurate readings, with just a 10-15% margin of error and minimal drift through time.
It's also compatible with Pimoroni's fancy Breakout Garden, where using breakouts is as easy just popping it into one of the six slots and starting to grow your project.
Important! The sensor has a PTFE membrane over it (it looks like a slightly translucent white film). DO NOT PEEL IT OFF! This is a gas-permeable membrane that is required for the sensor to function as intended.
Pimoroni designed this breakout board so that you can solder on the piece of right angle female header and pop it straight onto the bottom left 5 pins on your Raspberry Pi's GPIO header (pins 1, 3, 5, 7, 9).