micro bit sensor is present in micro bit board contain almost every for better functioning.
ELECFREAKS has micro bit sensor, kits, and modules.
Among them, the micro octopus series is a micro bit sensor series based on micro:bit developed by ourselves.
The micro bit sensor series is compatible with most expansion boards on the market. It contains a sound micro bit sensor, LED micro bit sensor, CO2 micro bit sensor, O2 micro bit sensor, etc.
This set of micro octopus sensors can realize various functions you want.