This Dust Sensor gives an indication of the air quality in an environment by measuring the dust concentration. The Particulate Matter level (PM level) in the air is measured by counting the Low Pulse Occupancy time (LPO time) in a given time unit. LPO time is proportional to PM concentration. This sensor can provide reliable data for air purifier systems; it is responsive to PM of diameter 1μm. Features * Grove compatible interface (extra wire with connector) [Arduino only] * Supply voltage range: 5V * Minimum detect particle: 1um * PWM output * Dimensions: 59 (W) x 45 (H) x 22 (D) (mm) * Product number: Seeed 101020012 Resources * Product Wiki Package Contents * 1x Grove Dust Sensor * 1x Grove Cable Specifications Dimensions 59mm x45mm x22mm Weight G.W 28g VCC 4.75~5.75V Standby Current Supply 90mA Detectable range of concentration 0~28,000 / 0 ~ 8000 pcs/liter / pcs/0.01cf Operating Temperature Range 0~45 °C Output Method Negative Logic, Digital output, High: over 4.0V(Rev.2), Low: under 0.7V Detecting the particle diameter >1μm Dimensions 59(W) × 45(H) × 22(D) mm Humidity Range 95% rh or less Notes: * Only compatible with Arduino Grove systems * This sensor uses a counting method to measure dust concentration, not the weighing method, and the unit is pcs/L or pcs/0.01cf * Please pay attention to the warnings listed here https://elecena.pl/product/22723409/grove-dust-sensor-ppd42ns 2023-03-07 https://elecena.pl/product/22723409/grove-dust-sensor-ppd42ns 2023-12-27 https://elecena.pl/product/22723409/grove-dust-sensor-ppd42ns 2024-09-19 https://elecena.pl/product/22723409/grove-dust-sensor-ppd42ns 2024-11-29 https://elecena.pl/product/22723409/grove-dust-sensor-ppd42ns 2024-11-30 https://elecena.pl/product/22723409/grove-dust-sensor-ppd42ns 2025-09-30 https://elecena.pl/product/22723409/grove-dust-sensor-ppd42ns 2025-11-28 https://elecena.pl/product/22723409/grove-dust-sensor-ppd42ns 2025-11-29