A
Anonymous
Apr 11, 2026
Rating: 5/5
Reliable
Been running for 2 months straight without issues. Stable data output.
Description
High-speed PM2.5 sensor module CJ3 for dust, smoke, and haze detection with high precision
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Measurement Range | 0-1000 μg/m³ |
| Detection Accuracy | ±10% at 100-500 μg/m³ |
| Communication Interface | UART / PWM |
| Operating Voltage | 5.0V ± 0.2V DC |
| Peak Current Consumption | 120mA |
| Response Time | < 10 seconds |
| Particle Size Detection | 0.3μm to 10μm |
| Operating Temperature | -10°C to 60°C |
| Storage Temperature | -30°C to 70°C |
| Module Dimensions | 48mm x 38mm x 13mm |
5 reviews
A
Anonymous
Mar 28, 2026
Rating: 4/5
Good value
Solid sensor but documentation could be clearer on pinout configuration.
A
Anonymous
Mar 12, 2026
Rating: 5/5
Excellent Precision
Works great with my ESP32 project. Readings match my professional meter closely.
A
Anonymous
Feb 25, 2026
Rating: 4/5
Nice module
Works well but gets warm during operation. Ensure proper ventilation.
A
Anonymous
Feb 03, 2026
Rating: 5/5
Fast Response
Noticed smoke immediately during testing. Very sensitive to particulate changes.
5 FAQ
Q: Is it waterproof?
A: No, this is an indoor electronic component and should be kept dry.
Q: Do you provide sample code?
A: Yes, Arduino and Python libraries are available on our official documentation site.
Q: What is the default baud rate?
A: Default UART baud rate is 9600 bps.
Q: Is 3.3V logic supported?
A: Yes, but level shifting is recommended for UART communication stability.
Q: Can this detect CO2?
A: No, this module detects particulate matter only, not gases like CO2.
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