Plantower® G3 PMS3003 Laser PM2.5 Sensor Module High Precision Gas Smog Dust Tester Detector

Note When you receive this sensor the surface is covered with a blue protective film When you peel off the film you can see the stainless steel case Working principle This sensor uses the principle of laser light scattering That is the laser illuminates the suspended particles in the air to generate scattering and at the same time the scattered light is collected at a certain angle to obtain a curve in which the intensity of the scattered light changes with time Furthermore the microprocessor uses an algorithm based on the MIE theory to obtain the equivalent particle size of the particles and the number of particles of different particle sizes per unit volume ParameterIndexUnitMeasuring range0 3 1 0 1 0 2 5 2 5 10Micron u m Counting efficiency50 0 3 um 98 0 5 um Weighing volume0 1L L Response time 10Seconds S DC supply voltage5Volt V Maximum operating current120mA nnA Stand by current100Microamp mA Data interface levelL 0 8 3 3 H 2 7 3 3Volt V Working temperature 10 50Celsius C Operating humidity range0 99 Mean time between failures3Year Y Size50x43x21Millimeter mm PIN8PWMPWMPIN7NCModule reset signal TTL level 3 3V low resetPIN6RESETSerial port transmit pin TTL level 3 3VPIN5TXDSerial Receiver Pin TTL Level 3 3VPIN4RXDSet pin TTL level 3 3V high level or floatingPIN3SETFor normal working state low level is sleep statePIN2GNDNegative power supplyPIN1NCVCCPower positive 5VOutput results The main output is the unit concentration