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Winsen CMV-2021D MEMS Catalytic H2 Sensor

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Gas Sensors for everyday users

The Winsen CMV-2021D MEMS Catalytic H2 Sensor by Winsen is a mid-range gas sensors designed for everyday users. It features Item Type: Gas Sensor and Sensor Type: MEMS, Catalytic.

₹4,313
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Total: ₹4,313
Buying tip: A quality investment for dependable performance and premium build quality.
Estimated delivery: 25 Aug8 Sept
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Quick Specs

Item Type: Gas Sensor
Sensor Type: MEMS, Catalytic
Model No. / Name: CMV-2021D
Operating Voltage: 3.0±0.1
Working Current (mA): 14±1.0
Linearity: ≤5%

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: robu-1659577Category: Gas Sensors

About This Product

The Winsen CMV-2021D MEMS Catalytic H2 Sensor by Winsen is a mid-range gas sensors designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

  • Item Type: Gas Sensor
  • Sensor Type: MEMS, Catalytic
  • Model No. / Name: CMV-2021D
  • Operating Voltage: 3.0±0.1 — works with standard household power
  • Working Current (mA): 14±1.0
  • Linearity: ≤5%
  • Environmental Temperature (°C): -40 to +85℃, (℃)
  • Response Time(s): ≤2

Why Buy from Elecvora?

Elecvora sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

CMV-2021D catalytic hydrogen sensor adopts the MEMS process, works according to the principle of catalytic combustion effect, and is paired by a detection element and a compensation element to form an arm of the bridge, when the resistance of the detection element increases, the output voltage of the bridge changes, the voltage variable increases proportionally with the increase of hydrogen concentration, and the compensation element plays a reference and temperature and humidity compensation role. Note: The image may vary in terms of size, shape, and color.

Applications:

  1. Hydrogen-powered vehicle
  2. Hydrogen energy preparation
  3. Energy storage battery/power station
  4. Hydrogen energy transport and use
  5. Hydrogen detection in other scenarios

Features:

  1. The bridge output is linear
  2. Quick response
  3. Good repeatability and selectivity
  4. Good stability and reliability
  5. Low power consumption
  6. Excellent anti-interference ability

Package Includes:

1 x Winsen CMV-2021D MEMS Catalytic H2 Sensor  

Setup Guide

1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.