Descriptions:
This product uses 1602 LCD screen to display PM1.0/PM2.5/PM10 concentration, temperature and humidity of the surrounding environment. This product adopts PMS5003 sensor which can get the quality and quantity of the suspended particle.

Features:
1602 LCD digital display, convenient for clear readings.
Detect the PM1.0/PM2.5/PM10 concentration in the air.
Display the temperature and humidity on main interface, °C/°F selectable.
Count the particle(>0.3μm/0.5μm/1.0μm/2.5μm/5.0μm/10μm) quantity in 0.1L air.
Short press the button to switch the display interfaces conveniently.
PM2.5 concentration>75μg/m³, high level output; PM2.5 concentration
Can also externally connect with relay to control air purifier switch.
With Micro USB interface, powered by DC 5V.
Three LED indicators, great for environment monitoring. 

Indicator Instruction:
Green Indicator: Normally ON(0-34 μg/m³): Good; Flash(35-74μg/m³): Medium
Yellow Indicator: Normally ON(75-114 μg/m³): Unhealthy for sensitive groups; Flash(115-149 μg/m³): Unhealthy
Red Indicator: Normally ON(150-249 μg/m³): Extremely unhealthy; Flash(249μg/m³ or above): Hazardous

Specifications:
Display: 1602 LCD Digital Display
Particle Matter Measuring Range: 0.3~1.0μm; 1.0~2.5μm; 2.5~10μm
Particle Matter Counting Efficiency: 50%@0.3μm, 98%@>=0.5μm
Particle Matter Concentration: 0~500μg/m³
Resolution: 1μg/m³
Formaldehyde Effective Range: 0~1mg/m³
Max. Formaldehyde Range: 0~2mg/m³
Formaldehyde Resolution: 0.001mg/m³
Formaldehyde Error: