CCS811 + SI7021 + HDC1080 + BMP280 Multi-Sensor Module – Air Quality, Temp & Humidity

This little board packs a bunch of sensors all in one—perfect for environmental monitoring projects.

It's got the CCS811 for carbon monoxide and VOCs (air quality), plus the SI7021 and HDC1080 for temperature and humidity (so you've got a backup or can compare readings), and a BMP280 for barometric pressure.

Everything's brand new, made in China, and comes in whatever basic packaging the manufacturer used.

No fancy brand name, just a solid combo sensor for Arduino, ESP32, or whatever you're tinkering with.

If you need to measure the air around you, this is a cheap way to get a lot of data points.