MQ-5 Methane/LPG Gas Sensor Module - Detect Methane, LPG, Natural Gas
MQ-5 Methane/LPG Gas Sensor Module
The MQ-5 gas sensor module detects methane, LPG, and natural gas concentrations in the air. It provides an analog output proportional to gas concentration, making it ideal for safety alarms and air quality monitoring systems. Its simple interface works with microcontrollers such as Arduino and Raspberry Pi.
Key Specifications
| Specification | Value |
|---|---|
| Gas Detected | Methane (CH4), LPG, Natural Gas |
| Detection Range | 300 – 10,000 ppm |
| Operating Voltage | 5V DC |
| Output Signal | Analog voltage (0-5V) |
| Heating Resistance | 33Ω ±5% at room temperature |
| Load Resistance | 10KΩ (adjustable via potentiometer) |
What You Can Build With This
- Gas leak alarm with buzzer and LED indicator
- Smart kitchen safety system with IoT notifications (ESP8266/ESP32)
- Portable air quality monitor with LCD display
- Methane detector for biogas plants or mines
Compatibility
Compatible with any 5V microcontroller board, including Arduino Uno, Nano, Mega, and Raspberry Pi (external ADC required). It operates on 5V logic, so the analog output can be read directly by 5V ADC pins. For 3.3V systems like Raspberry Pi Pico, use a voltage divider or level shifter.
Wiring Notes
Connect VCC to 5V, GND to ground, and AO (analog out) to an analog input pin. The MQ-5 draws about 200mA during heating, so use an external power source if powering from a board’s 5V regulator. Allow the sensor to preheat for at least 24 hours before the first use for accurate readings.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, the MQ-5 module works with any Arduino board. Connect the AO pin to an analog input and read the voltage. Many example sketches are readily available in the Arduino community.
Does this module require calibration?
The module comes pre-calibrated for LPG/methane detection, but you can adjust the onboard potentiometer to change sensitivity. For accurate ppm readings, perform a two-point calibration using known gas concentrations.
What is the warm-up time?
After initial 24-hour burn-in, the sensor stabilizes within a minute of power-on. For precise measurements, allow 2-3 minutes of heating after each power cycle.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items