Using four sds011 sensors with arduino based on https://github.com/sensebox/SDS011-select-serial
I only check PM10 values so if you want to check PM2.5, just add String in Serial.println.
Example :
Serial.println("P25_1: "+String(sp25_1) + " P25_2: "+String(sp25_2) + " P25_3: "+String(sp25_3)+ " P25_4: "+String(sp25_4));
Red line : Vcc , Black line : Gnd , Green line : TXD(sds011) , Blue line : RXD(sds011)