Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 5V DC |
| Interface Type | Analog Output (AO) & Digital Output (DO) |
| Preheat Time | 24-48 Hours |
| Detection Range | 300-10000 ppm (varies by model) |
| Operating Temperature | -10°C to 50°C |
| PCB Dimensions | 32mm x 20mm x 14mm |
| Indicator LED | Power & Digital Trigger Indicators |
| Comparator Chip | LM393 |
| Sensitivity Adjustment | Adjustable via Potentiometer |
| Package Content | 1x Sensor Module, 3x Pin Headers |
Anonymous
Mar 08, 2026
Rating: 4/5
Good value
Solid build quality for the price. Needs proper calibration time though, do not expect instant accuracy.
Anonymous
Feb 25, 2026
Rating: 4/5
Consistent performance
Bought 10 units, all working. One needed potentiometer tweak to match the others but overall satisfied.
Anonymous
Feb 13, 2026
Rating: 5/5
Detected smoke reliably
Used for a prototype alarm system. Very sensitive to cigarette smoke and lighter fluid during testing.
Anonymous
Feb 11, 2026
Rating: 5/5
Perfect for learning
Helped me understand gas sensing for my thesis. Documentation online is plentiful for these modules.
Anonymous
Feb 08, 2026
Rating: 5/5
Great for Arduino projects
Works perfectly with my Uno. Easy to wire up and the analog readings are stable after preheating.
Q: What is the power consumption?
A: Approximately 150mA during the heating phase. Ensure your power supply can handle the current spike.
Q: How long does calibration take?
A: We recommend 24-48 hours of continuous power for stable baseline readings before deployment.
Q: Can this detect natural gas leaks?
A: MQ-2 detects combustible gases, but this module is not certified for life-safety alarms or building code compliance.
Q: Is this compatible with Raspberry Pi?
A: Yes, but requires an external ADC since the Pi lacks analog inputs. The digital output works directly.
Q: Does it come with headers?
A: Yes, standard 3-pin headers are included in the package for easy breadboard integration.
Natural Crystal Morganite Pink Loose Beads - Single Round Beads for DIY Jewelry Making and Craft Accessories
$0.89
Mini Pencil Sharpener for Elementary Students - Small Manual Crank Sharpener for Kids' Pencils
$1.89
Bamboo Flute Bar Dynamic Sheet Music Book for Accompaniment, Sight-Reading, and Rhythm Practice
$221.00
Multi-Function Thickened Industrial Scouring Pad for Cleaning, Stainless Steel Brushing, Rust Removal, and Emery Cleaning
$7.80
Natural Light Yellow Azeztulite Loose Beads for DIY Jewelry Making and Craft Supplies
$2.00
Expanded Clay Pebbles for Gardening - Pot Bottom Layer, Surface Mulch, Soil-Free Hydroponics for Flowers, Succulents, Orchids - Breathable Planting Medium
$7.70
1/5 Pack Silicone Kitchen Utensils Set for Cooking Baking
$43.12
Aizaofang 6-Cavity Triple Flower Silicone Mold - DIY Handmade Soap Home Decor - Food-Grade Heat-Resistant Material
$12.70
Single-Leg Manganese Steel Lifting Hook with Wide Opening for Hoists and Cranes
$92.00
Hesdick HZL-32 Portable Stone Removal Hook, Multi-Function Groove Tool for Car Tire Debris Cleaning
$9.28
PC Bonding Sealing Waterproof UV1901 Guardrail Tube Adhesive Shadowless Glue UV Glue Electronic Glue
$859.00
Wan Dian Wu Xian Stackable Toy Accessories - Vol.3 Prosperous Era Series Blind Capsule Figures for Desktop Display
$29.00
In Stock Commercial Vegetable Chopper and Meat Mincer - Grinding Machine for Baozi Fillings, Chili Dumplings, and Sausage WTP Meat Paste Processing
$5,805.00
Industrial Lint-Free Cloth for Cleaning Lenses, Optical Instruments, and Phone Screens; Microfiber Dusting Wipes
$81.58
Electric Barrel Water Dispenser Pump Automatic Water Lifter for Mineral and Purified Water
$74.00
F01RB0WA23 Transmission Valve for Roewe DQCT280 Remanufactured
$324.00
Full Payment Pre-order Guzi Bear DMMD Dramatical Murder Badge Polaroid Set Merchandise
$29.00
Peach Wood Sheepskin Rattle and Clapper Brass Traditional Handmade Baby Teething Hand Drum Newborn Gift Box
$29.90
Pirelli Run-Flat Tires 235/245/255/265/275/285 40 45 50 55R19R20R21
$350.00
Protective Case Lid for Pelican Cases - Laptop Insert for Models 1510, 1560, and 1535
$254.00
Universal 5800 Super Glue for Plastic, Metal, Glass, and Wood, 10-Second Fast Curing
$2.01
White Noise Wood Chip Core Grid Scented Candle Wooden Core S-Type Brand Name Candle Container Soy Candle Core Wood
$1.50
Zunjue 100% Cotton Paper Block 300g Watercolor Paper, Fine/Medium Grain, Thickened 80 Sheets, Neutral Acid-Free Journal Paper for Art Students, Beginners, Watercolor, Colored Pencil, Pen, Light Wash, Marker
$27.20
Outdoor Waterproof Dry Bag for Rafting and Creek Walking - Large Capacity Backpack for Swimming, Hiking, Diving, and Flood Rescue
$132.00
Lukang 995 Door and Window Fast-Drying Glass Sealant - Transparent Weather-Resistant Neutral Silicone Structural Adhesive
$222.90
Large Flip-Type Water Draining and Air Drying Machine, Fully Automatic Air Knife Blower for Vegetables, Commercial Continuous Drying Equipment
$15,282.00
Large Capacity Household Quilt Storage Bag - Waterproof and Moisture-Proof Duvet Organizer for Moving, Packing, and Luggage Sorting
$5.88
Scented Candle Aluminum Alloy Turntable 360-Degree Rotating Double-Sided Silent Non-Slip Small Turntable for Cake Decorating and DIY
$30.40
Ceramic Five Oxen Painting Brush Washer – Antique-Style Ink Well for Calligraphy & Traditional Painting
$16.90
Liupintang 3-in-1 Brush Washing Bucket with Palette - Portable Handheld Multi-Function Art Tool for Chinese Painting, Watercolor, and Gouache, Foldable Small Pail
$17.80
