Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Measurement Range | 400 - 5000 ppm |
| Accuracy | ±(50 ppm + 5% reading) |
| Operating Voltage | 4.5V - 5.5V DC |
| Communication Interface | UART / PWM |
| Response Time | < 60 seconds |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -20°C to 60°C |
| Dimensions | 33mm x 20mm x 9mm |
| Expected Lifespan | > 10 years |
Anonymous
Mar 30, 2026
Rating: 4/5
Solid performance in varying temps
Tested this in a chamber ranging from 15 to 40 degrees Celsius. The temperature compensation works well. Just ensure you provide a clean 5V power supply to avoid noise in the PWM signal.
Anonymous
Mar 26, 2026
Rating: 5/5
Best value for NDIR technology
Compared to other modules in this price range, the SC8 offers superior long-term stability. The automatic baseline correction feature is a huge plus for unattended operation.
Anonymous
Mar 23, 2026
Rating: 4/5
Great sensor, needs clear pinout diagram
The sensor performance is top-notch and very responsive to CO2 changes. I deducted one star because the silk screen on the PCB could be clearer regarding the TX/RX pins, but once figured out, it works perfectly.
Anonymous
Mar 22, 2026
Rating: 5/5
Excellent precision for HVAC projects
I integrated this SC8 module into a custom ventilation controller. The NDIR technology provides stable readings even with humidity fluctuations. Setup via UART was straightforward using the provided documentation.
Anonymous
Mar 22, 2026
Rating: 5/5
Perfect for educational kits
We use these in our advanced environmental science kits. Students find the digital output easy to interface with microcontrollers like Arduino and ESP32. Robust build quality withstands student handling.
Anonymous
Mar 05, 2026
Rating: 5/5
Reliable for agricultural monitoring
We deployed ten of these sensors across our greenhouse facility. They have been running continuously for three months with consistent data output. The calibration drift is negligible compared to cheaper electrochemical sensors.
Q: Is the housing waterproof for outdoor use?
A: The module itself is not waterproof. For outdoor applications, you must install it inside an IP-rated enclosure with a breathable membrane to allow gas diffusion while protecting against rain and dust.
Q: Does this detect Carbon Monoxide (CO) as well?
A: No, this is a dedicated CO2 (Carbon Dioxide) sensor using NDIR technology. It is specifically tuned to the absorption wavelength of CO2 and will not detect Carbon Monoxide (CO).
Q: Can I connect this directly to a 3.3V microcontroller?
A: The sensor operates on 5V. While the logic levels are often tolerant, we recommend using a logic level converter for the UART lines when connecting to a 3.3V MCU to ensure reliable communication and prevent potential damage.
Q: Does this sensor require manual calibration?
A: The SC8 module features an automatic baseline calibration (ABC) logic that runs periodically. Manual calibration is generally not required unless used in an environment where CO2 levels never drop below 400ppm for extended periods.
Q: What is the warm-up time before accurate readings are available?
A: Upon power-up, the sensor requires approximately 2 to 3 minutes to warm up the infrared source and stabilize. Valid data should be read after this initial period.
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