6240292544053248 New Digital Store Elecfreaks Octopus PM2.5 module PM2.5 Electronic brick is one of the modules in OCTOPUS series to test the PM2.5 concentration . Based on ZH03 laser dust sensors, it can test the dust particle Product #: newdigitalhk-Elecfreaks Octopus PM2.5 module 2023-01-25 Regular price: $HKD$305.0 Available from: New Digital StoreIn stock