Winsen MH-Z1311A NDIR CO2 Module


MH-Z1311A carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose, small-scale sensor that uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air. It has good selectivity, no oxygen dependence, and long life.

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Built-in temperature compensation, digital output, and 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.
HVAC refrigeration
Smart home
Air cleaner device
Ventilation system
Indoor air quality monitoring
The air chamber adopts electroplating treatment, waterproof and anti-corrosion
High sensitivity, low power consumption
Excellent stability
Temperature compensation, excellent linear output
Provide serial port (UART) output mode
Long lifespan
Anti-water vapor interference, anti-poisoning

Model No. MH-Z1311A
Detection Gas CO2
Working Voltage 5.0±0.1V DC
Average Current Consumption (mA) <800uA(@5V power supply)
Peak Current (A) 90mA (@5V power supply)
Interface Type 3.3 V (Compatible with 5V)
Detection range 0~10000ppm(optional)
Output Signal Serial Port (UART) (TTLlevel 3.3V)
Preheat time 10s
Response Time(T90) T90 < 60 s
Working Temperature Range (°C) -10 ~ 50℃
Working Humidity Range 0 ~ 95% RH (No condensation)
Weight (g) 5 g
Lifespan > 10 years


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