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MH-Z14A NDIR Infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature sensor can do temperature compensation; and it has digital output and PWM output. This common type infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, Precision optical circuit design and superior circuit design
400~2000/5000/10000ppm CO2
UART, PWM
HVAC, ventilation system, air purifier, air monitor
MH-Z14A NDIR Infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature sensor can do temperature compensation; and it has digital output and PWM output. This common type infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, Precision optical circuit design and superior circuit design
| Working voltage | 4.5 V ~ 5.5V DC |
| Average current | <60mA(@5V input) |
| Peak current | 150 mA(@5V input) |
| Interface level | 3.3 V(5V compatible) |
| Measuring range | 0~10000ppmoptional(refer to table 2) |
| Output signal | Serial Port (UART, TTL level) |
| PWM | |
| Analog output(DAC), 0.4-2V | |
| Preheat time | 3min |
| Response Time | T90<120s |
| Working temperature | 0℃ ~ 50℃ |
| Working humidity | 0~90%RH(no condensation) |
| Weight | 15g |
| Lifespan | >5 year |
| Target Gas | Measuring Range | Accuracy |
| Carbon Dioxide (CO2) | 0~2000ppm | ±(50ppm +3%reading value) |
| 0~5000ppm | ||
| 0~10000ppm | ±10% reading value |
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