MH-Z19B Infrared CO2 Sensor Module with Pin

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.

Parameters:

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: 0~5000ppm can be selected within the range
• Warm-up time: 3min
• Response time: 90<120s
• Working temperature: 0～50°C
• Operating Humidity: 0 to 95% RH (non-condensing)

Characteristics：

Gas chamber with gold plating, waterproof and corrosion resistant

• High sensitivity, low power consumption
• Excellent stability
• Temperature compensation, excellent linear output
• Provides serial (UART), analog (DAC), PWM waveform output methods
• long lasting
• Water vapor interference, not poisoning

Application:

HVAC refrigeration equipment

• Air quality monitoring equipment
• Fresh air system
• Air purification equipment
• Smart home
• SCHOOL
•  

Vin: Power Positive (Vin)

GND: Negative Power Supply (GND)

Vo: Analog output

PWM: PWM

HD: HD (zero for school, low for more than 7 seconds)

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

Package inculdes:

1 x MH-Z19B 0-5000ppm Infrared CO2 Sensor