The MH-Z19E carbon dioxide gas sensor (hereinafter
referred to as the sensor) is a general-purpose intelligent small sensor. It
has two products: pin and terminal. It uses the principle of non-dispersive
infrared (NDIR) to detect CO2 in the air and has good selectivity. ,No oxygen
dependence, long life, etc.; built-in temperature compensation; also has serial
port output, PWM output, easy to use. The sensor is a high-performance sensor
made by closely combining mature infrared absorption gas detection technology
with precise optical circuit design and sophisticated circuit design.
Sensor
specifications:
Β· High sensitivity, low power
consumption
Β· Excellent stability
Β· Temperature compensation, excellent
linear output
Β· Provide serial port (UART), PWM
waveform and other output methods
Β· long lasting
Β· Anti-water vapor interference, no
poisoning
Application:
Β· HVAC equipment
Β· Air quality monitoring equipment
Β· Fresh air system
Β· Air purification equipment
Β· Smart home
Parameters:
Β· Product model: MH-Z19E
Β· Detection gas: carbon dioxide
Β· Power supply voltage: DC(5.0Β±0.1)V
Β· Average current: <40mA (@5V power
supply)
Β· Peak current: 125 mA (@5V power
supply)
Β· Interface level: 3.3V (compatible
with 5V)
Β· Measuring range: 400~5000ppm
optional
Β· Output signal: serial port (UART)
(TTL level 3.3V); PWM
Β· Warm-up time: 1min
Β· Response time: T90 <120s
Β· Working temperature: -10βο½50β
Β· Storage temperature: -20βο½60β
Β· Working humidity: 0ο½95%RH (non-condensing)
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