Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Sensor Model	MQ-3
Operating Voltage	5V DC
Output Type	Analog and Digital
Detection Range	0.04 - 4 mg/L
Response Time	≤ 10 Seconds
Recovery Time	≤ 30 Seconds
Operating Temperature	-10°C to 50°C
Storage Temperature	-20°C to 70°C
Module Dimensions	32 x 20 x 15 mm
Pin Configuration	4-Pin Header

5 reviews

Anonymous

Apr 06, 2026

Rating: 5/5

Great value

Affordable and effective for school electronics projects.

Anonymous

Apr 06, 2026

Rating: 5/5

Perfect for prototypes

Works great with my microcontroller. Sensitivity adjustment is easy.

Anonymous

Mar 18, 2026

Rating: 4/5

Solid module

Digital output threshold is adjustable. Good build quality.

Anonymous

Feb 26, 2026

Rating: 4/5

Good sensitivity

Detects vapor quickly. Needs warm-up time as stated in specs.

Anonymous

Feb 25, 2026

Rating: 5/5

Reliable component

Used in multiple projects. Consistent performance every time.

5 FAQ

Q: What is the power consumption?

A: Approximately 150mA during operation.

Q: Does it require calibration?

A: Initial burn-in is recommended. Potentiometer adjusts sensitivity.

Q: Is this compatible with Raspberry Pi?

A: Yes, but ensure logic level shifting is used for GPIO safety.

Q: Is the pinout standard?

A: Yes, it uses a standard 4-pin header layout compatible with most boards.

Q: Can it detect methane?

A: It is optimized for alcohol. Use MQ-4 for methane detection.

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