PMS5003 (G5) is a digital versatile particulate matter concentration sensor can be used to get the quality and quantity in the unit volume of suspended particulate matter in the air, and a digital interface in the form of output. The sensor can be embedded in a variety of concentrations of suspended particulate matter in the air or related instrumentation equipment to improve the environment, to provide timely and accurate concentration data. Measuring range: 0.3~1.0;1.0~2.5;2.5~10 (um) DC Supply Voltage: 5.0(V) ,Maximum Operating Current: 120(mA) color: blue material: metal Package Contents: 2 set x Sensor (Accessories as shown) 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.