Description
Specifications: Material: Plastic Condition: 100% brand new and high quality Weight: 60g Interface specification: PinNameNote1NCEmpty21umPM2.5: 0-999 PWM Output35V5V power input42.5μmPM10: 0-999 PWM Output5GNDGND6RSerial port receiver RX, TTL level @ 3.3V7TSerial port transmission TX, TTL level @ 3.3V Note: The pitch of Interface is 2.54mm 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 bytesNameContent0message headerAA1orderC02data 1PM2.5 low byte3data 2PM2.5 high byte4data 3PM10 low byte5data 4PM10 high byte6data 5ID byte 1 7data 6ID byte 28checksumchecksum9message trailerAB Checksum: data 1 + data 2 + …+ data 6 PM2.5 data content: PM2.5 (um/m3) = ((PM2.5 high byte*256 ) + PM2.5 low byte)/10 PM10 data content: PM10 (um/m3) = ((PM10 high byte*256 ) + PM10 low byte)/10 The low byte and high byte of SN are the last four of the bar code on the sensor. PWMoutput: Output range: PM2.5: 0-999μg/m3, PM10: 0-999μg/m3 Cycle: 1004ms +1% High level output in start cycle: 2ms Middle cycle: 1000ms +1% Low level output in end cycle: 2ms Package List 1 x Laser Dust Sensor 1 x USB To TTL Module 1 x Cable