Communication protocol:
Serial communication protocol: 9600 8N1. (Rate of 9600, data bits 8, parity none, stop bits 1)
Serial report communication cycle: 1+0.5 seconds
Data frame (10 bytes): message header + order+ data(6 bytes) + checksum + message trailer
The number of bytes:Name:Content
0:message header:AA
order:C0
data 1:PM2.5 low byte
data 2:PM2.5 high byte
data 3:PM10 low byte
data 4:PM10 high byte
data 5:0(reserved)
data 6:0(reserved)
checksum:checksum
message trailer:AB

Checksum: data 1 + data 2 + ...+ data 6
PM2.5 data content: PM2.5 (ug/m3) = ((PM2.5 high byte*256 ) + PM2.5 low byte)/10
PM10 data content: PM10 (ug/m3) = ((PM10 high byte*256 ) + PM10 low byte)/10

Interface specification:
CTL:Control pin, reserved
1um:>0.3 Micron particle concentration, PWM Output
5V:5V power input
25um:>2.5 Micron particle concentration, PWM Output
GND:GND
R:Serial port receiver RX
T:Serial port transmission TXPS: The pitch of Interface is 2.54mm

Package included:
1 x PM Sensor SDS011 High Precision PM2.5 Air Quality Detection Sensor Module