{"title":"Air Quality Monitor (PM 2.5, Formaldehyde, Temperature  Humidity Sensor)","handle":"air-quality-monitor-pm-2-5-formaldehyde-temperature-humidity-sensor","url":"/products/air-quality-monitor-pm-2-5-formaldehyde-temperature-humidity-sensor","description":"A multifunction air quality monitor that measures particulate matter (PM2.5), formaldehyde concentration, temperature, and humidity. It uses laser scattering to detect suspended particles in the air, an electrochemical probe for formaldehyde detection, and an integrated sensor for temperature and humidity readings.\n\nThe sensor outputs data via serial interface at 9600 bps and operates at 3.3V logic levels, making it compatible with most microcontrollers. Its six-sided shielding design provides high anti-interference performance, and the air inlet/outlet direction can be adapted to different enclosure designs.\n\nKey Features\n\n\nPM2.5 Detection – Laser scattering measurement for particles 0.3–10µm\n\nFormaldehyde Sensor – Electrochemical probe, 0–1 mg/m³ effective range\n\nTemperature Sensor – -20°C to 99°C range, ±0.5°C accuracy\n\nHumidity Sensor – 0–99% range, ±2% accuracy\n\nFast Response – Total response time ≤10 seconds\n\nZero False Alarm Rate – Reliable real-time readings\n\nSix-Sided Shielding – Patent structure for high anti-interference performance\n\n\nSpecifications\n\n\nOperating Voltage – 5.0V DC\n\nActive Current – 100mA\n\nStandby Current – ≤200µA\n\nInterface Level – 3.3V logic (L <0.8V, H >2.7V)\n\nBaud Rate – 9600 bps (default)\n\nParticle Range – 0–500µg/m³ (effective), up to 2000µg/m³ (max)\n\nParticle Resolution – 1µg/m³\n\nMinimum Particle Size – 0.3µm distinguishable\n\nCounting Efficiency – 50% at 0.3µm, 98% at ≥0.5µm\n\nOperating Temperature – -10°C to +60°C\n\nMTTF – ≥3 years\n\nWeight – 50g\n\nDimensions – 50 × 38 × 21mm\n\n\nIdeal For\n\nIndoor air quality monitoring stations\nEnvironmental sensing and data logging\nSmart home air quality systems\nHVAC and ventilation monitoring\n\n\nPackage Contents\n\n1× Air Quality Monitor sensor\n1× 8-pin cable\n1× PM2.5 adapter board\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":9431,"title":"Default Title","sku":"DF-SEN0233","price":175.59,"on_sale":false,"in_stock":true,"available_quantity":83,"option1":"Default Title"}]}