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Winsen MH-Z19C NDIR CO₂ Sensor for HVAC and Indoor Air Quality
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Product Description
The Winsen MH-Z19C is an NDIR carbon-dioxide (CO₂) sensor designed for HVAC and indoor-air-quality monitoring applications. It operates from a 5.0 ± 0.1 V DC supply and provides UART (3.3 V TTL level) and PWM output signals for easy integration with controllers and IoT systems. The sensor supports an optional 400–10,000 ppm CO₂ measurement range and uses a gold-plated chamber for reliable gas sensing.
Applications
Product Specifications
| Model | MH-Z19C |
| Detection Gas | Carbon Dioxide (CO₂) |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Detection Range | 400–10,000 ppm (optional range) |
| 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 |
| Output | UART (3.3 V TTL) and PWM |
| Preheat Time | 1 minute |
| Response Time | T90 <120 seconds |
| Working Temperature | −10 to 50 °C |
| Working Humidity | 0–95% RH, non-condensing |
| Storage Temperature | −20 to 60 °C |
| Dimensions | 32.9 × 19.7 × 8.6 mm |
| Weight | 5 g |
| Service Life | More than 10 years |
Product Features
- Uses NDIR infrared technology for selective, oxygen-independent CO₂ measurement.
- Supports an optional 400-10,000ppm measurement range with 1ppm resolution.
- Provides UART 3.3V TTL and PWM outputs for controller and IoT integration.
- Built-in temperature compensation supports stable measurement across the operating range.
- Gold-plated sensing chamber improves durability and resistance to water vapour.
- Suitable for HVAC, indoor-air-quality monitoring and ventilation control.
Package Includes
- 1 × Winsen MH-Z19C NDIR CO₂ Sensor Module
Other Information
Warranty Information
15 Days Seller Warranty
This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of TwoElectrons customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.
What Voids Warranty
If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.
Shipping & Returns Policy
Shipping Policy:
- Delivery time within metro cities in India is 1-3 days; for other locations, it is 3-7 days. Delivery varies based on location and courier service.
- If the item is out of stock, the estimated delivery time is 7-14 days from order confirmation. Delivery varies based on location and courier service.
Return & Refund Policy:
- Return window: 7 days from receipt unless stated otherwise.
- No refunds or replacements after the return window.
- Returns are accepted only for non-working or damaged products.
- Initiate return requests from here: Return Request or contact us at 09831070550.
- Refunds are processed within 3-4 working days after inspection and approval.
Main Features
- NDIR technology for accurate CO₂ detection
- Good selectivity with oxygen-independent measurement
- Built-in temperature compensation
- UART and PWM output interfaces
- Low power consumption and long operating life
- Anti-water-vapour interference and anti-poisoning design
SKU: 2ESE20009
₹ 2,999.00
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Lead time
| Quantity | Dispatch |
|---|---|
| 1-10 units |
1 to 3 days (metro cities) 3 to 7 days (others location) |
| >10 units | To be negotiated |
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