MH-Z19B NDIR CO2 SENSOR
For indoor air quality monitoring, and HVAC system;
Applications :
*HVAC *Air purifier
*Indoor air quality monitoring *Smart home
*Ventilation system *School
Product Advantages:
- *High sensitivity, low power consumption
- *Good stability
- *Multiple output modes: UART, PWM
- *Long lifespan
Product Description:
MH-Z19B 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 compensation; and it has UART output and PWM output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.
Technical Parameters:
| Model No. | MH-Z19B |
| Detection Gas | CO2 |
| Working voltage | 4.5 ~ 5.5 V DC |
| Average current | < 20mA (@5V power supply) |
| Peak current | 150mA (@5V power supply) |
| Interface level | 3.3 V (Compatible with 5V) |
| Detection Range | 400~2000/5000/10000ppm(optional) |
| Output signal | Serial Port (UART) (TTL level 3.3V) |
| PWM | |
| Preheat time | 3 min |
| Response Time | T90 < 120 s |
| Working temperature | -10 ~ 50 ℃ |
| Working humidity | 0 ~ 95% RH (No condensation) |
| Weight | 5 g |
| Lifespan | > 5 years |
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