SKU: SENS-0810
📋 GST Invoice Available

ACEBOTT MQ-4 Natural Gas & Methane Sensor - Analog Output, Easy-Plug Compatible

₹419.00 (Inclusive of all taxes)
Out of Stock

The ACEBOTT MQ-4 is a semiconductor-based combustible gas sensor module designed for detecting methane, propane, and butane. It provides an analog voltage output proportional to gas concentration, making it compatible with development boards like Arduino and ESP32 via its Easy-Plug connector for rapid prototyping.

Features

  • Detects combustible gases including methane (natural gas), propane, and butane.
  • Analog voltage output for direct interfacing with microcontroller ADCs.
  • Wide detection range from 300 to 10,000 ppm.
  • Operates on a standard 5V DC supply with ~150mA heater current.
  • Easy-Plug connector system for quick integration with ACEBOTT and compatible development ecosystems.

Out of stock

Description

The MQ-4 sensor utilizes a tin dioxide (SnO2) semiconductor sensing element. In clean air, the sensor’s conductivity is low. When a combustible gas is present, the gas interacts with the sensing surface, causing a decrease in resistance that is proportional to the gas concentration. This change is measured as an analog voltage signal.

Designed for easy integration, the module includes a built-in comparator for basic threshold detection and an Easy-Plug connector for simplified wiring with platforms like ESP32 and Arduino. It is suitable for preliminary leak detection and safety monitoring applications in well-ventilated areas, with an operating temperature range of -20°C to +80°C.

Key Features

  • Semiconductor (SnO2) gas sensing technology for combustible gas detection.
  • Analog output signal provides continuous concentration data for microcontroller processing.
  • On-board potentiometer for adjusting the sensitivity and digital output threshold.
  • Easy-Plug connector enables tool-free connection to compatible mainboards.
  • Pre-calibrated module with a stable 5V voltage regulator and signal conditioning circuit.
  • Designed for rapid prototyping in educational and DIY safety projects.

Applications

  • Prototype and DIY natural gas leak detectors for home workshops or RVs.
  • Educational projects demonstrating semiconductor gas sensing principles with Arduino or ESP32.
  • Basic safety monitoring in well-ventilated utility rooms or garages.
  • Preliminary air quality screening for combustible gas presence in maker projects.

Technical Specifications

Sensor TypeMQ-4 Semiconductor Gas Sensor
Target GasesMethane (Natural Gas), Propane, Butane
Detection Range300 - 10,000 ppm
Output SignalAnalog Voltage
Operating Voltage5V DC ±0.1V
Heater Current~150 mA
Operating Temperature-20°C to +80°C
InterfaceEasy-Plug Connector
Module DimensionsApprox. 32mm x 22mm (PCB)

Frequently Asked Questions

What gases can the ACEBOTT MQ-4 sensor detect?

The MQ-4 is primarily sensitive to combustible gases such as methane (the main component of natural gas), propane, and butane. It is optimized for methane detection but will respond to other hydrocarbon gases within its specified range.

How do I interface this sensor with an Arduino or ESP32?

Connect the module's 5V and GND pins to your board's power supply. The analog output (AO) pin should be connected to an analog input pin (e.g., A0 on Arduino). The digital output (DO) pin can be connected to a digital pin for basic threshold alarms. The Easy-Plug connector simplifies cable connections if using a compatible mainboard.

Does the sensor require any pre-heating or calibration?

Yes, the semiconductor element requires a pre-heating period of typically 24-48 hours for initial stabilization when first used. For accurate concentration readings, calibration in a known gas concentration is required. The module includes a potentiometer to adjust the digital output threshold for alarm applications.

What is the operating voltage and current draw?

The module requires a stable 5V DC supply. The integrated heater circuit draws approximately 150mA. Ensure your power source or microcontroller can provide this current to ensure proper sensor operation and stability.

Package Includes

  • 1 x ACEBOTT MQ-4 Gas Sensor Module

Additional Information

Weight 0.008 kg
Dimensions 7 × 5 × 2 cm