Welcome to our shop! Features: - Accurate and Reliable: laser detection, stable, good consistency. - Quick response: data update frequency 1Hz. - Easy integration: serial output, built-in fan. - High resolution: resolution of 0.3ug/m3. - Convenient use, easy installation, and small volume. Specifications: - Material: Plastic - Condition: 100% brand new and high quality - Weight: 60g Technical Parameters: - Measuring output: PM2.5, PM10 - Range: PM2.5: 0.0-999.9μg/m3, PM10: 0.0-1999.9μg/m3 - Rated voltage: 5V - Rated current: 70mA±10mA - Sleep current: <4mA - Temperature range: Storage environment: -20℃ ~ +60℃, Operation environment: -10℃ ~ +50℃ - Humidity range: Storage environment: Max.90%, Operation environment: Max.70% - Working atmosphere pressure: 86KPa ~ 110KPa - Response time: 1s - Serial data output frequency: 1Hz - Min. particle diameter resolution: Less than 0.3um - Counting efficiency: 70%@0.3μm, 98%@0.5μm - Relative error: ±15% and ±10μg/m3 maximum(25℃, 50%RH) - Power supply voltage: 4.7~5.3V - Power supply power: ≥1W (current > 200mA) - Power supply voltage ripple: ＜20mV - Product size: Approx. 70 x 70 x 22mm / 2.75 x 2.75 x 0.86inch Interface specification: - Pin 1: NC (Empty) - Pin 2: 1um (PM2.5: 0-999 PWM Output) - Pin 3: 5V (5V power input) - Pin 4: 2.5μm (PM10: 0-999 PWM Output) - Pin 5: GND (Ground) - Pin 6: R (Serial port receiver RX, TTL level @ 3.3V) - Pin 7: T (Serial port transmission TX, TTL level @ 3.3V) Communication protocol: - Serial communication protocol: 9600 8