| Model No. | MH-Z19D |
| Detection gas | CO2 |
| Working Voltage | 5.0±0.1V DC |
| Average Current | <40mA (@5V power supply) |
| Peak Current | 125mA (@5V power supply) |
| Interface Level | 3.3V (Compatible with 5V) |
| Detection range | 400~10000ppm (optional, see table 2.) |
| Output Signal | Serial Port (UART) (TTL level 3.3V) |
| PWM | |
| Preheat Time | 1 min |
| Response Time | T90 <120s |
| Working Temperature | 0 ~ 50℃ |
| Working Humidity | 0 ~95% RH (No condensation) |
| Storage Temperature | -20~60 ℃ |
| Weight | 5g |
| Life Span | > 5 years |
CO2 Sensor
MH-Z19D NDIR CO₂ Sensor Module | High Accuracy Infrared Carbon Dioxide Gas Sensor
₹3,304.00 Price With Tax
| Detection range: | 400~10000ppm optional |
| Detection principle: | non-dispersive infrared (NDIR) principle |
| Characteristics: | 1, High sensitivity, low power consumption; 2, Good stability; 3. Temperature compensation, excellent linear output; 4. Multiple output modes: UART, PWM; 5.RESET compliant |
| Size: | 32.9×19.7×8.6mm (LxWxH) |
| Working conditions: | DC(5.0±0.1)V |
| Measurement range: | 400～2000 ppm 400～5000 ppm 400～10000ppm |
15 Days Warranty
This product comes with a 15-day warranty starting from the date of delivery. The warranty covers manufacturing defects only. If a defect is confirmed, the item will be replaced.
Warranty will not apply if:
- The product has been misused, dropped, or damaged.
- It has been exposed to water, fire, chemicals, or static discharge.
- It has been tampered with, soldered, or altered in any way.
The MH-Z19D NDIR CO₂ Module is a compact and high-performance carbon dioxide gas sensor designed for precise and stable CO₂ concentration measurement. Built with advanced Non-Dispersive Infrared (NDIR) technology, this module provides accurate detection, strong anti-interference capability, and long-term operational reliability.
The MH-Z19D is widely used in indoor air quality (IAQ) monitoring systems, HVAC control units, smart ventilation systems, air purifiers, schools, offices, and building automation solutions. Its small footprint and low power consumption make it ideal for integration into OEM devices and embedded monitoring equipment.
Equipped with automatic baseline calibration (ABC logic) and built-in temperature compensation, the MH-Z19D ensures consistent and drift-resistant performance. It delivers real-time CO₂ concentration data to support energy-efficient ventilation control and maintain healthy indoor air standards.
Key Features:
- Advanced NDIR infrared CO₂ sensing technology
- High accuracy with excellent repeatability
- Measurement range typically up to 5000 ppm (model dependent)
- UART and PWM output interfaces
- Automatic baseline calibration (ABC) function
- Built-in temperature compensation
- Compact design with low power consumption
- Designed for continuous monitoring applications
Applications:
- Indoor Air Quality (IAQ) monitoring devices
- HVAC and ventilation control systems
- Smart home and building automation
- Greenhouse CO₂ monitoring
- Environmental monitoring equipment
- Air purification and fresh air systems
| Weight | 0.200 kg |
|---|---|
| Dimensions | 12 × 6 × 6 cm |
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