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.
We partner with trusted courier services to ensure timely and safe delivery.

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Shipping charges are calculated at checkout based on the delivery location and package weight.
Free shipping may be available for orders above a specified amount, as mentioned on our website.

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5. Delivery Issues:

If a package is delayed, lost, or damaged during transit, please contact our support team immediately.
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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