6539624039841792 Businesspro Mall Elecfreaks Octopus Dust Sensor Detector Module Octopus Dust Sensor Detector Module is used to detect the density of dust particle with diameter beyond 0.8μm such as cigarette smoke. Product #: businesspro-Elecfreaks Octopus Dust Sensor Detector Module 2022-06-14 Regular price: $HKD$178.0 Available from: Businesspro MallIn stock