Winsen MH-Z19B NDIR CO2 sensor for indoor air quality monitoring

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SKU: rz24313442 Category: Gas and Dust Sensor

Description

MH-Z19B NDIR infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle
to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature compensation; and it has UART output and PWM output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.

Applications:

HVAC refrigeration
Air cleaner device
Indoor air quality monitoring
Smart home
Ventilation system
School

Features:

Chamber is gold plated, water-proof and anti-corrosion
High sensitivity, low power consumption
Good stability
Temperature compensation, excellent linear output
Multiple output modes: UART, PWM
Long lifespan
Anti-water vapor interference, anti-poisoning

Specifications:

Model No: MH-Z19B
Detection Gas: CO2
Working voltage: 4.5 ~ 5.5 V DC
Average current: < 20mA (@5V power supply)
Peak current: 150mA (@5V power supply)
Interface level: 3.3 V (Compatible with 5V)
Detection Range: 0~2000/5000/10000ppm(optional)
Output signal: Serial Port (UART) (TTL level 3.3V), PWM
Preheat time: 3 min
Response Time: T90 < 120 s
Working temperature: -10 ~ 50 ℃
Working humidity: 0 ~ 95% RH (No condensation)
Weight: 5 g
Lifespan: > 5 years

Packages Includes:

1 x Winsen MH-Z19B NDIR CO2

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Shipping & Delivery

Shipping and Delivery Policy

1. Shipping Process:

Orders are processed within 1-2 business days after payment confirmation.
Delivery time varies based on location and selected shipping method, typically ranging between 3-7 business days.
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Claims for lost or damaged items must be reported within 48 hours of delivery.

6. No Return Policy for Opened/Soldered Products:

We do not accept returns for products that have been opened, used, or soldered.
Ensure you verify product compatibility before purchase, as returns will only be accepted for unopened and unused items in their original packaging.

7. Refund Policy:

Refunds will be issued only for canceled orders before shipment or wrong/damaged items received (subject to investigation).
No refunds or replacements for products that have been tampered with, soldered, or physically damaged by the customer.

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Resolution of Particle Mass Concentration	1μg/mᶟ
Temperature Measurement Range	0~99℃
Temperature Measurement Resolution	0.1℃
Humidity Measurement Range	0~99%
Humidity Measurement Resolution	0.1%
Humidity Measurement Accuracy	±2%
Single Response Time	＜1s
Comprehensive Response Time	≤10s
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Standby Current	≤200mA
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Lifespan	＞2 years (in air)
Working Humidity Range	0-99% RH (non-condensing)
Working Temperature Range (°C)	-20°C ~ +50°C
Product Dimensions	32mm x 27mm/1.26 x 1.06 inch
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Circuit Voltage	5.0±0.2V DC
Load Resistance	variable 0.45kΩ min.
Heater Resistance	approx 59Ω at room temp.
Heater Current	56±5mA
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Target Gases	Carbon monoxide
Typical detection range	0 ~ 5 , 000ppm
Baseline offset(*1)	<±10ppm equivalent
Operating temperature	10˚C ~ +50˚C (continuous) -20˚C ~ +60˚C (intermittent)
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