MQ5 Gas Sensor LPG

The MQ5 gas sensor detects LPG, natural gas, coal gas, and hydrogen — making it the standard choice for home gas leak detection and industrial gas safety monitoring. It outputs both a digital threshold alarm and an analog concentration signal, allowing precise gas level measurement or simple on/off detection.

🔹 Key Applications

• LPG and natural gas leak detection in kitchens and storage areas

• Industrial gas safety monitoring on factory floors

• Automatic gas shutoff valve triggering

• Portable gas leak detector builds

• Greenhouse gas concentration monitoring

• Mine safety gas alert systems

🔹 Why Choose This Module?

• Sensitive to LPG, CH4, H2, and coal gas — wide gas type coverage

• Dual output (digital + analog) — threshold alerts and concentration readings

• Adjustable sensitivity threshold — tune to your environment

• Preheat time of ~3 minutes — then stable and accurate

• 3.3 V and 5 V compatible — Arduino and Raspberry Pi ready

🔹 Technical Specifications

• Sensor Type: MQ5 electrochemical

• Target Gases: LPG, Natural Gas, Coal Gas, Hydrogen

• Operating Voltage: 5 V DC

• Output: Digital (D0) + Analog (A0)

• Preheat Time: ~3 minutes

• Detection Range: 200 – 10000 ppm

🔹 What's Included

1 × MQ5 Gas Sensor Module

🔹 Pro Tip

💡 Allow 3 minutes warm-up after power-on before trusting readings — the heating element needs to stabilise. Calibrate the digital threshold in clean air by adjusting the potentiometer until the D0 LED just turns off. Mount near floor level for LPG (heavier than air) detection.

⚠️ Note: Always ensure proper heat dissipation and correct voltage configuration before powering connected devices.