Multiple Mounting Versions
Available in pin, reversed-pin and terminal configurations.
MH-Z19E NDIR CO2 Sensor Module
The MH-Z19E is a compact NDIR CO2 module available in pin, reversed-pin or terminal versions. Selectable 400–10,000 ppm ranges, UART and PWM output and a 2-second refresh time support indoor air-quality and ventilation applications.
BrandWinsen
Sensing PrincipleNDIR
Target GasCO2
Product TypeNDIR CO2 Sensor Module
CO2 Sensing for OEM Integration
Product Overview
Flexible mechanical versions and dual outputs for embedded carbon-dioxide monitoring products.
The MH-Z19E detects CO2 using non-dispersive infrared absorption and provides good gas selectivity without oxygen dependence.
Integrated temperature compensation, low power consumption and a compact module format support integration into HVAC, air-purification and smart-home equipment.
Designed for Reliable Integration
Key Features
Selectable Measurement Range
Offers 400–2000 ppm, 400–5000 ppm and 400–10,000 ppm options.
Fast Data Refresh
The official specification lists a refresh time of 2 seconds.
UART and PWM Outputs
Supports serial and pulse-width output for flexible system integration.
Temperature Compensation
Built-in compensation helps maintain a stable linear response.
Long Operating Life
Specified lifespan is more than 10 years.
Typical Use Cases
Applications
HVAC and Refrigeration
Air Cleaner Devices
Indoor Air Quality Monitoring
Smart Home Equipment
Ventilation Systems
Schools and Classrooms
Official Product Parameters
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | MH-Z19E |
| Detected Gas | Carbon dioxide (CO2) |
| Detection Principle | Non-dispersive infrared (NDIR) |
| Measurement Range | 400–2000 ppm, 400–5000 ppm or 400–10,000 ppm |
| Resolution | 1 ppm |
| Accuracy | ±(50 ppm + 5% of reading) |
| Working Voltage | 5.0±0.1 V DC |
| Average Current | <40 mA at 5 V |
| Peak Current | 125 mA at 5 V |
| Interface Level | 3.3 V, compatible with 5 V |
| Output Signal | UART, TTL 3.3 V; PWM |
| Preheat Time | 1 min |
| Refresh Time | 2 s |
| Response Time | T90 <120 s |
| Operating Temperature | -10°C to +50°C |
| Operating Humidity | 0–95% RH, non-condensing |
| Storage Temperature | -20°C to +60°C |
| Dimensions | 32.9 × 19.7 × 8.6 mm |
| Weight | 5 g |
| Expected Lifespan | >10 years |
Specifications are based on the official Winsen product page. Confirm the latest datasheet, communication protocol, calibration requirements and mechanical drawing before final product design.
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