Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Sensor Model | MQ-4 Semiconductor |
| Detection Gases | Methane, LPG, Propane, Butane |
| Operating Voltage | 5V DC |
| Output Signals | Analog (AO) and Digital (DO) |
| Preheat Time | 24-48 Hours (Initial) |
| Sensitivity Adjustment | Adjustable via Onboard Potentiometer |
| Operating Temperature | -10°C to 50°C |
| PCB Dimensions | 32mm x 20mm x 22mm |
| Interface Pins | VCC, GND, DO, AO |
| Primary Application | DIY Electronics & Prototyping |
Anonymous
Apr 12, 2026
Rating: 3/5
Decent but basic
It works, but don't rely on it for critical safety alarms. Good for learning and experimentation only.
Anonymous
Apr 01, 2026
Rating: 5/5
Fast delivery
Module arrived well packaged. Pinout is clearly labeled and easy to connect.
Anonymous
Mar 30, 2026
Rating: 5/5
Great for Arduino projects
Works exactly as expected. Detected gas leaks during testing easily. Perfect for my home monitoring prototype.
Anonymous
Feb 07, 2026
Rating: 5/5
Perfect for school project
Used this for a safety monitoring prototype. Very responsive to lighter gas during demos.
Anonymous
Feb 06, 2026
Rating: 4/5
Good sensitivity
Needs some time to warm up before readings stabilize. Good value for the price point.
Q: Does it come with headers?
A: Yes, pin headers are included and pre-soldered for easy breadboard use.
Q: Can this detect Carbon Monoxide?
A: No, this is MQ-4 for combustible gases. Please use the MQ-7 module for Carbon Monoxide detection.
Q: Is 3.3V logic supported?
A: The sensor heater requires 5V. Logic levels may vary, but 5V microcontrollers are recommended for stability.
Q: How long does preheating take?
A: We recommend 24-48 hours of continuous power for initial stabilization before calibration.
Q: What is the detection range?
A: It typically detects combustible gas concentrations from 300 to 10000 ppm.
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