Honeywell HPMA115S0 Dust Sensor
This sensor board allows you to monitor particulates in the air in one small package. Connect it on your own or use a Particle Squared.
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Protect Your Lungs With This Proven Air Quality Sensor
Use your Particle Mesh devices to monitor the air quality in your house. Mnitor humidity, temperature, air particulates, eC02 and TVOCs.