SKU: SENS-0942
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MICS-5524 CO H2 CH4 Gas Sensor Detection Module - Analog Output

₹1,249.00 (Inclusive of all taxes)
Out of Stock

The MICS-5524 is a MEMS-based gas sensor module designed for detecting a broad range of combustible gases and volatile organic compounds (VOCs), including carbon monoxide (CO), hydrogen (H2), methane (CH4), and ethanol. Operating at 5V DC, it provides an analog voltage output proportional to gas concentration, making it compatible with Arduino, Raspberry Pi, and other microcontroller platforms for air quality monitoring and leak detection projects.

Features

  • Broad-spectrum detection for CO, H2, CH4, NH3, and ethanol gases.
  • Analog voltage output for direct interfacing with ADC inputs on microcontrollers.
  • Integrated heater with low-power enable/disable control pin (EN).
  • Compact PCB breakout board with pre-soldered header pins for easy prototyping.
  • Wide operating temperature range from -30°C to 85°C for robust environmental performance.

Out of stock

Description

The MICS-5524 module integrates a robust MEMS (Micro-Electro-Mechanical Systems) metal oxide semiconductor (MOS) gas sensor. The sensing element requires a heated surface, drawing 25-35mA at 5V, to facilitate the chemical reaction that changes its resistance in the presence of target gases. This resistance change is conditioned by the onboard circuit to produce a variable analog output voltage.

This sensor is designed for qualitative and semi-quantitative detection in non-safety-critical applications such as indoor air quality assessment, educational experiments, and early-stage prototype development for gas leak detection. It is important to note that the sensor responds to multiple gases simultaneously and cannot differentiate between them without specific calibration and environmental control. All readings require baseline calibration for meaningful interpretation.

Key Features

  • Multi-gas sensitive MOS (Metal Oxide Semiconductor) sensing element.
  • Onboard signal conditioning for stable analog voltage output.
  • Integrated heater with dedicated enable pin (EN) for power management.
  • Compact and lightweight PCB design for easy integration into projects.
  • Wide operating humidity range of 5-95% RH for reliable performance in varied conditions.
  • Pre-assembled and tested breakout board for immediate use.
  • High-value build optimized for prototyping and educational experimentation.

Applications

  • Indoor air quality (IAQ) monitoring systems for CO and VOC levels.
  • Educational prototypes for gas sensing and environmental electronics.
  • Early warning systems for methane or natural gas leak detection in workshops.
  • Breath analyzer experiments for ethanol detection.
  • DIY smart home sensors for garage or basement air quality assessment.

Technical Specifications

Item TypeGas Sensor Module
Sensor ModelMICS-5524
Operating Voltage4.9 - 5.1 VDC
Heater Current25-35 mA
Output SignalAnalog Voltage
Detection GasesCO, H2, CH4, NH3, Ethanol, Propane, Iso-Butane
Detection Range (CO/H2)~1 - 1000 ppm
Detection Range (NH3)~1 - 500 ppm
Detection Range (Ethanol)~10 - 500 ppm
Operating Temperature-30°C to 85°C
Operating Humidity5 - 95% RH
Dimensions (L x W x H)20 x 13 x 3.4 mm
Weight1 g

Frequently Asked Questions

What is the operating voltage for the MICS-5524 module?

The module requires a regulated 5V DC power supply, with an acceptable range of 4.9V to 5.1V. The integrated heater draws approximately 25-35mA. Powering outside this range may affect sensor performance and longevity.

How do I interface with this sensor? What is the output signal?

The primary output is an analog voltage pin. Connect this pin to an ADC (Analog-to-Digital Converter) input on your microcontroller (e.g., Arduino). The output voltage increases proportionally with the concentration of detected target gases. A separate EN pin allows you to disable the heater by pulling it high to 5V to conserve power.

Can this sensor differentiate between the gases it detects?

No, the MICS-5524 is a broad-spectrum metal oxide sensor. It responds to changes in concentration of all its target gases (CO, H2, CH4, NH3, ethanol) simultaneously. It cannot identify which specific gas is present without controlled calibration, known environmental conditions, or the use of sensor array techniques.

Is calibration required, and how is it done?

Yes, calibration is essential for obtaining meaningful quantitative data. First, establish a baseline output voltage in clean air (zero gas). Then, expose the sensor to a known concentration of a target gas, if possible, to create a response curve. For most hobbyist applications, using the sensor for relative change detection or threshold alarms is more practical than precise PPM measurement.

What is the purpose of the heater and the EN pin?

The heater is critical for the metal oxide sensing element to function. It maintains the sensor at its optimal operating temperature. The EN pin controls this heater; pulling it HIGH (to 5V) turns the heater OFF, reducing power consumption. After turning the heater back on, you must wait for a stabilization period (typically several seconds to a minute) before taking accurate readings.

Package Includes

  • 1x Assembled MICS-5524 Gas Sensor Breakout Board
  • 1x Set of Header Pins

Additional Information

Weight 0.001 kg
Dimensions 2 × 1.3 × 0.34 cm