MH-Z19B NDIR CO2 Sensor Module Carbon Dioxide 0-5000ppm
MH-Z19B carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose smart small-scale sensor that uses non-dispersive infrared (NDIR) principle to detect the presence of CO2 in the air, with good selectivity and anaerobic Gas dependence, long life, and other characteristics; built-in temperature compensation; at the same time with serial output, analog output and PWM output, easy to use. The sensor is a high-performance sensor that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.
- Product model number: MH-Z19B
- Gas Detection: Carbon Dioxide
- Supply voltage: 4.5~5.5V DC
- Average current: <20mA (@5V power supply)
- Peak current: 150 mA (@5V supply)
- Interface level: 3.3V (5V compatible)
- Measurement range: 0~10000ppm can be selected within the range
- Output signal:
- Serial (UART) (TTL level 3.3V)
- PWM
- Analog output (DAC) (default 0.4~2V) (0~3V range configurable)
- Warm-up time: 3min
- Response time: T90<120s
- Working temperature: 0 ～ 50°C
- Operating Humidity: 0 to 95% RH (non-condensing)
- Weight: 5g
- Life: >5 years
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- Vin: Power Positive (Vin)
- GND: Negative Power Supply (GND)
- Vo: Analog output
- PWM: PWM
- HD: HD (zero calibration, low for more than 7 seconds to calibrate)
- Rx: UART (RXD) TTL Level Data Input
- Tx: UART (TXD) TTL level data output
- Pin 1: Analog Output Vo
- Pin 2: None
- Pin 3: Negative Power Supply (GND)
- Pin 4: Positive Power Supply (Vin)
- Pin 5: UART (RXD) TTL Level Data Input
- Pin 6: UART (TXD) TTL Level Data Output
- Pin 7: None