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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.
Specification
| 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 |
Other Information
Warranty Information
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: 2ESE20025
₹ 2,999.00
Bulk orders or B2B inquiries? communication@twoelectrons.com
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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15 Days Product Warranty
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