---
product_id: 460735607
title: "MH-Z19 Infrared CO2 Sensor Module MH-Z19B Carbon Dioxide Gas Sensor for CO2 Monitor 0-5000ppm MH Z19B"
brand: "icquanzx"
price: "€ 7.91"
currency: EUR
in_stock: false
reviews_count: 5
url: https://www.desertcart.nl/products/460735607-mh-z19-infrared-co2-sensor-module-mh-z19b-carbon-dioxide
store_origin: NL
region: Netherlands
---

# Water vapor resistant & corrosion-proof Multi-output modes: UART, PWM, Analog Built-in temperature compensation MH-Z19 Infrared CO2 Sensor Module MH-Z19B Carbon Dioxide Gas Sensor for CO2 Monitor 0-5000ppm MH Z19B

**Brand:** icquanzx
**Price:** € 7.91
**Availability:** ❌ Out of Stock

## Summary

> 🌬️ Breathe smarter, monitor sharper — the future of air quality sensing is here!

## Quick Answers

- **What is this?** MH-Z19 Infrared CO2 Sensor Module MH-Z19B Carbon Dioxide Gas Sensor for CO2 Monitor 0-5000ppm MH Z19B by icquanzx
- **How much does it cost?** € 7.91 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/460735607-mh-z19-infrared-co2-sensor-module-mh-z19b-carbon-dioxide)

## Best For

- icquanzx enthusiasts

## Why This Product

- Trusted icquanzx brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust & Reliable:** Gold-plated gas chamber resists water vapor and corrosion for long-lasting performance.
- • **Precision CO2 Detection:** High sensitivity with NDIR tech ensures accurate air quality insights.
- • **Low Power, Fast Response:** Consumes <20mA with T90 response under 120 seconds—ideal for real-time monitoring.
- • **Versatile Output Options:** Seamlessly integrates via UART, PWM, or analog signals for flexible deployment.
- • **Smart Temperature Compensation:** Maintains linear output across 0-50°C for consistent readings.

## Overview

The MH-Z19B is a compact, high-performance infrared CO2 sensor module designed for precise carbon dioxide monitoring up to 10,000ppm. Featuring advanced NDIR technology, built-in temperature compensation, and multiple output modes (UART, PWM, analog), it delivers reliable, fast, and stable readings with resistance to water vapor interference and corrosion. Perfect for smart home, HVAC, and air quality applications, it combines durability with low power consumption for seamless integration into professional environments.

## Description

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-Z19BGas Detection: Carbon DioxideSupply voltage: 4.5~5.5V DCAverage current: <20mA (@5V power supply)Peak current: 150 mA (@5V supply)Interface level: 3.3V (5V compatible)Measurement range: 0~10000ppm can be selected within the rangeWarm-up time: 3minResponse time: T90<120sWorking temperature: 0ï½50°COperating Humidity: 0 to 95% RH (non-condensing)Characteristicsï¼Gas chamber with gold plating, waterproof and corrosion resistantHigh sensitivity, low power consumptionExcellent stabilityTemperature compensation, excellent linear outputProvides serial (UART), analog (DAC), PWM waveform output methodslong lastingWater vapor interference, not poisoningApplications:HVAC refrigeration equipmentAir quality monitoring equipmentFresh air systemAir purification equipmentSmart homeSCHOOLVin: Power Positive (Vin)GND: Negative Power Supply (GND)Vo: Analog outputPWM: PWMHD: HD (zero for school, low for more than 7 seconds)Rx: UART(RXD) TTL Level Data InputTx: UART (TXD) TTL level data outputPin 1: Analog Output VoPin 2: NonePin 3: Negative Power Supply (GND)Pin 4: Positive Power Supply (Vin)

Review: Hab's an einen esp32 angeschlossen. Mit Tasmota wurde es in den IObroker eingebunden. Jetzt steuere ich die Lüftungsanlage damit. Funktioniert wie gewünscht. Ist wohl auch relativ genau, habe zwei Stück, welche sehr nahe beieinander liegen. Hätte ich es von HMIP gekauft, hätte es 160€ pro Stück mehr gekostet.
Review: Capteur peu cher et bien pratique pour mesurer grossièrement la qualité de l'air d'une pièce. Attention cependant, il faut impérativement désactiver la fonction d'auto calibration ("logic ABC" dans le datasheet du fabricant), sinon toutes les 24 heures le capteurs fera une calibration à 400PPM sans se poser de question. Il est préférable de faire une calibration manuellement plutôt que de laisser le capteur dériver au grès du vent (littéralement). (400 PPM ~= air extérieur, hors agglomération) Connecteur : Fil noir : masse, Fil rouge : +5volts, Fil bleu : Rx, Fil vert : Tx.

## Features

- This MH - Z19 C02 gas sensor has high sensitivity, high resolution.
- Providing a variety of forms output modes, such as UART and PWM wave.
- Anti-water vapor interference, no poisoning.
- With temperature compensation, excellent linear output.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VD15YRP |
| Item model number | 00963 |
| Manufacturer | ICQUANZX |
| Package Dimensions | 12.1 x 7.8 x 1.1 cm; 20 g |

## Product Details

- **Brand:** ICQUANZX
- **Colour:** Gelb
- **Item weight:** 0.02 Kilograms
- **Power source:** Corded Electric
- **Style:** Modern

## Images

![MH-Z19 Infrared CO2 Sensor Module MH-Z19B Carbon Dioxide Gas Sensor for CO2 Monitor 0-5000ppm MH Z19B - Image 1](https://m.media-amazon.com/images/I/61zEfNSrMOL.jpg)
![MH-Z19 Infrared CO2 Sensor Module MH-Z19B Carbon Dioxide Gas Sensor for CO2 Monitor 0-5000ppm MH Z19B - Image 2](https://m.media-amazon.com/images/I/61cdwpQ8SmL.jpg)
![MH-Z19 Infrared CO2 Sensor Module MH-Z19B Carbon Dioxide Gas Sensor for CO2 Monitor 0-5000ppm MH Z19B - Image 3](https://m.media-amazon.com/images/I/61GI3psGzsL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by W***E on 28 December 2023*

Hab's an einen esp32 angeschlossen. Mit Tasmota wurde es in den IObroker eingebunden. Jetzt steuere ich die Lüftungsanlage damit. Funktioniert wie gewünscht. Ist wohl auch relativ genau, habe zwei Stück, welche sehr nahe beieinander liegen. Hätte ich es von HMIP gekauft, hätte es 160€ pro Stück mehr gekostet.

### ⭐⭐⭐⭐ Review
*by F***N on 12 October 2019*

Capteur peu cher et bien pratique pour mesurer grossièrement la qualité de l'air d'une pièce. Attention cependant, il faut impérativement désactiver la fonction d'auto calibration ("logic ABC" dans le datasheet du fabricant), sinon toutes les 24 heures le capteurs fera une calibration à 400PPM sans se poser de question. Il est préférable de faire une calibration manuellement plutôt que de laisser le capteur dériver au grès du vent (littéralement). (400 PPM ~= air extérieur, hors agglomération) Connecteur : Fil noir : masse, Fil rouge : +5volts, Fil bleu : Rx, Fil vert : Tx.

### ⭐⭐⭐⭐⭐ Review
*by R***O on 2 February 2021*

Funciona perfectamente, no es una copia pirata como en otros casos

## Frequently Bought Together

- ICQUANZX MH-Z19 Infrared CO2 Sensor Module MH-Z19B Carbon Dioxide Gas Sensor for CO2 Monitor 0-5000ppm MH Z19B
- Elegoo 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Wires Ribbon Cables Kit for arduino

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-27*