Supports continuous data acquisition and has strong anti-interference capabilities Zero false alarm rate, accurate real-time response data, minimum resolution particle size of 0.3 micrometers The PMS1003(G1) is a digital general-purpose particulate matter concentration sensor that can obtain and quantity of suspended particulate matter in a unit volume of air and output it in digital form. This sensor can be embedded in various instruments or environmental improvement devices related to the concentration of suspended particulate matter in the air, providing them with timely and accurate concentration data. This sensor uses the principle of laser scattering. A laser beam is shone onto suspended particulate matter in the air, causing scattering. The scattered light is collected at a specific angle, obtaining a curve showing the change in scattered light intensity over time. Then, the microprocessor uses an algorithm based on Mie to determine the equivalent particle size and the number of particles of different sizes per unit volume (The product printed words depending on the batch, but this does not affect use) Color:As Shown Material:ABS Package Contents: 1 * PMS1003 G1 Sensor Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.