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Winsen

Winsen MC109 Catalytic Flammable Gas Sensor

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Gas Sensors for everyday users

The Winsen MC109 Catalytic Flammable Gas Sensor by Winsen is a mid-range gas sensors designed for everyday users. It features Item Type: Gas Sensor and Model No. / Name: MC109.

₹2,105
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Total: ₹2,105
Buying tip: A well-rounded choice at a fair price. Recommended for most buyers.
Estimated delivery: 25 Aug8 Sept
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Quick Specs

Item Type: Gas Sensor
Model No. / Name: MC109
Sensor Type: Catalytic
Standard Encapsulation: Metal, Metallurgy powder mesh
Operating Voltage: 2.5±0.1
Working Current (mA): 100±10

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: robu-1278793Category: Gas Sensors

About This Product

The Winsen MC109 Catalytic Flammable Gas 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
  • Model No. / Name: MC109
  • Sensor Type: Catalytic
  • Standard Encapsulation: Metal, Metallurgy powder mesh
  • Operating Voltage: 2.5±0.1 — works with standard household power
  • Working Current (mA): 100±10
  • Linearity: ≤5%
  • Measurement Range: (%LEL) 0~100 — reliable connection even at a distance

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.

Winsen Electronics, research, design, and produce MC109 catalytic combustion/flammable gas sensor, 0~100%LEL detection range gas sensor. MC109 adopts catalytic combustion principle, and its two arms of electric bridge consists of a test element and a compensate element. The resistance of the test element rises once it meets the combustible gases, in the same time, the output voltage of the bridge changes and the voltage variation rises in direct proportion to the gas concentration. The compensate element, as a conference, has the function of compensating temperature and humidity. Applications: It is widely used in industrial occasion to detect the concentration of hydrogen, ethyne, gasoline, VOC such as alcohol, ketone, benzene.

Features:

  1. The bridge output is linear
  2. Quick response
  3. Good repeatability and selectivity
  4. Good stability
  5. Excellent resistance to the interference of H2S gas and organosilicon.

Package Includes:

1 x Winsen MC109 Catalytic Flammable Gas 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.