{"product_id":"ppd42ns-pm2-5-optical-dust-sensor-module","title":"PPD42NS PM2.5 Optical Dust Sensor Module","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe \u003cstrong\u003ePPD42NS Dust Sensor\u003c\/strong\u003e is a high-sensitivity optical module designed to detect the concentration of airborne particles. Utilizing the \u003cstrong\u003elight scattering method\u003c\/strong\u003e, it identifies particles such as cigarette smoke, house dust, and pollen. This sensor features a built-in heater that creates a thermal siphon to draw air through the sensing chamber, eliminating the need for an external fan. It provides a \u003cstrong\u003ePWM (Pulse Width Modulation) output\u003c\/strong\u003e, where the \"Low Pulse Occupancy\" time is proportional to the particulate concentration. It is an excellent choice for \u003cstrong\u003eDIY air purifiers, indoor air quality monitors, and smart home ventilation systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePeople also search for:\u003c\/strong\u003e ppd42ns arduino, shinyei dust sensor, pm2.5 sensor module, optical particle counter, air quality sensor ppd42, arduino dust detector, smoke detection module.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 5V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Current:\u003c\/strong\u003e 90mA (includes heater)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParticle Detection Size:\u003c\/strong\u003e \u0026gt; 1 micron (approx. PM2.5 range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Method:\u003c\/strong\u003e PWM (Negative Logic - Low Pulse Occupancy)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStabilization Time:\u003c\/strong\u003e ~1 minute after power-on (for heater to warm up)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 59mm x 45mm x 22mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 45°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e 5-Pin JST Connector (VCC, GND, Output)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eApplications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Purifiers:\u003c\/strong\u003e Real-time feedback for automatic fan speed control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Quality Monitors:\u003c\/strong\u003e Portable or stationary PM2.5 monitoring stations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Homes:\u003c\/strong\u003e Triggering HVAC ventilation when dust or smoke is detected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial:\u003c\/strong\u003e Cleanroom monitoring and environmental health safety kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT Projects:\u003c\/strong\u003e Logging pollution data to the cloud using ESP8266 or Arduino.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eUsage Notes\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e For the built-in heater to work effectively, the sensor \u003cstrong\u003emust be mounted vertically\u003c\/strong\u003e. This ensures the thermal siphon moves air correctly through the chamber.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e Ensure a stable 5V supply; fluctuations can affect the accuracy of the optical sensing circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e The sensor is sensitive to ambient light; it should be installed inside a dark enclosure with proper air intake and exhaust vents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003ePackage Includes\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e1 × PPD42NS Dust Sensor Module\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TOMSON ELECTRONICS","offers":[{"title":"Default Title","offer_id":47738473251054,"sku":"SEN-27564","price":163.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2132\/9029\/files\/httpsstatics3.seeedstudio.comseeedimg2016-11uurjzjuilzanpukibjpvbl23.jpg?v=1772799825","url":"https:\/\/www.tomsonelectronics.com\/products\/ppd42ns-pm2-5-optical-dust-sensor-module","provider":"Tomson Electronics ","version":"1.0","type":"link"}