CJ-702-U PM2.5 air quality gas sensor
The CJ-702-U is a high-sensitivity air quality sensor designed for real-time detection of particulate matter (PM2.5) in indoor and outdoor environments. With a built-in fan, digital UART output, and optical sensing technology, it provides accurate measurements of air pollution levels for smart air purifiers, environmental monitors, and IoT applications.
Key Features:
- 5 Detection: Measures fine airborne particles down to 2.5 µm
- Optical Sensing: Laser-based detection with high precision
- UART Output: Real-time digital data stream for microcontrollers
- Compact and Integrated: Includes fan, optics, and processor
- Long Service Life: Designed for 5+ years continuous operation
- Plug-and-Play: Easy integration with minimal external components
- Stable Output: Built-in algorithm for consistent readings
- Model: CJ-702-U
- Detection Type: PM2.5 (particulate matter)
- Output Interface: UART serial communication
- Measurement Range: 0 – 999 µg/m³
- Accuracy: ±10% (typical)
- Operating Voltage: 5V DC
- Current Consumption: ~100 mA (with fan)
- Response Time: ≤1 second
- Working Life: ≥5 years (continuous mode)
- Dimensions: Varies by module casing (~45mm × 40mm)
- Air purifiers and filtration systems
- Smart home and IoT air quality monitoring
- HVAC and ventilation optimization
- Indoor pollution detection systems
- Environmental health and safety projects
- Portable air quality meters and wearables