Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Detection Principle | NDIR (Non-Dispersive Infrared) |
| Measurement Range | 0 to 5000 ppm |
| Supply Voltage | 5.0V ± 0.1V DC |
| Communication Interface | UART / PWM |
| Accuracy | ±(50 ppm + 5% of reading) |
| Response Time | Less than 120 seconds |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -20°C to 60°C |
| Module Size | 33mm x 20mm x 9mm |
| Warranty | 12 Months Limited |
Anonymous
Apr 10, 2026
Rating: 5/5
Excellent for plant monitoring
Integrated this with my ESP32 for automated CO2 dosing. Readings are stable and match my handheld meter.
Anonymous
Mar 27, 2026
Rating: 3/5
Pins are fragile
Sensor works fine but the pin header felt a bit delicate during soldering. Handle with care.
Anonymous
Mar 19, 2026
Rating: 4/5
Good value but needs warmup
Works well once warmed up. Give it about 3 minutes before trusting the first reading.
Anonymous
Feb 20, 2026
Rating: 5/5
Reliable for commercial use
We deployed ten of these in our nursery. Consistent performance across all units.
Anonymous
Feb 19, 2026
Rating: 5/5
Perfect for HVAC projects
UART communication is straightforward. Documentation was sufficient for my Home Assistant setup.
Q: How long does calibration take?
A: The module comes pre-calibrated. ABC logic handles automatic baseline calibration over time.
Q: Is it waterproof for outdoor use?
A: The module itself is not waterproof. Please house it in a protective enclosure for outdoors.
Q: Can I power this with 3.3V?
A: No, please use 5V. Using 3.3V may cause unstable readings or damage.
Q: Does this support I2C communication?
A: No, this model supports UART and PWM interfaces only.
Q: Do you provide an Arduino library?
A: We do not host a library, but many open-source libraries support the MH-Z14 protocol.
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