Introducing the MQ-7 CO Carbon Monoxide Coal Gas Sensor Module, your reliable solution for monitoring CO concentrations in the air. This sensor accurately detects CO levels ranging from 10 to 10,000 ppm, providing vital information for maintaining indoor air quality and ensuring safety.
Operating within a temperature range of -10 to 50°C, this sensor module consumes less than 150 mA at 5V, making it efficient and versatile for various applications.
Equipped with both digital and analog outputs, the module offers flexibility in data interpretation. Easily adjust the digital output threshold using the onboard preset, enabling seamless integration with microcontrollers, Arduino boards, and other compatible devices.
Ensure a safe and healthy environment with the MQ-7 CO Carbon Monoxide Coal Gas Sensor Module, your trusted ally in CO detection and monitoring.
Standard Test Conditions
Temperature:20°C ± 2°C
Humidity:65% ± 5% RH
Standard Test Circuit: Vc:5.0V ± 0.1V; Vh(high):5.0V±0.1V
Vh(low):1.5V±0.1V
Features
The voltage of the analog output increases as the concentration increases.
The sensitivity of the carbon monoxide detection is high.
There are four screw holes for easy positioning.
The service life is long and the stability is reliable.
The response and recovery characteristics are fast.
specification:
Operating voltage (v)
DC 5
Range
10 ~ 1000 ppm
Characteristic gas
100 ppm CO
Sensitivity
≥ 3%.
Return time
≤ 30 sec
Heating resistance
± 31 Ω
Heating current
≤ 180 mA
Heating voltage
5.0V ± 2V / 1.5 ± 1V
Heating power
approx. 350 mW
Ambient temperature (°C)
-20 ~ + 50
Humidity
≤ 95% RH
Oxygen content
21%.
Length (mm):
35
Width (mm)
20
Height (mm)
11
Weight (gm)
20
Package Includes
1 x MQ-7 CO Carbon Monoxide Coal Gas Sensor Module.
The MQ-7 CO Carbon Monoxide Coal Gas Sensor Module is a versatile gas and dust sensor used across a wide range of applications including air quality monitoring, gas leak detection, industrial safety, HVAC systems, and environmental monitoring.
Common use cases:
Building a gas leak alarm for LPG/methane
Monitoring indoor air quality (CO2, VOC)
Dust monitoring in a workshop
This product is ideal for environmental engineers, safety professionals, and IoT developers.
Technical Tip: MQ-series sensors need a warm-up period (24-48 hours for first use). Calibrate in clean air for accurate readings.
Shipping & Delivery
Free shipping on orders above ₹999 across India
Dispatched within 1-3 business days
Expected delivery: 3-7 business days depending on location
Secure packaging to ensure safe transit of electronic components
Weight
0.01 kg
Dimensions
3 × 3 × 2 cm
15 Days Warranty
Please note that this item is only covered by a standard supplier warranty against manufacturing defects for a period of 15days from the time of delivery. It is important to understand that only manufacturing defects are covered under this warranty, and any other issues will not be considered for reimbursement or replacement. We strongly advise inspecting the product upon delivery to ensure it meets your expectations. In case of any manufacturing defects, we guarantee reimbursement or replacement.
What voids warranty:
If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.
Parth Bajaj (verified owner) –
Good quality MQ-7 CO Carbon Monoxide Coal Gas. Some variation in readings but within acceptable range.
Mukesh Tandon –
Good quality MQ-7 CO Carbon Monoxide Coal Gas. Some variation in readings but within acceptable range.
Manish Hegde (verified owner) –
Nice MQ-7 CO Carbon Monoxide Coal Gas. Readings are mostly accurate. Good enough for my hobby project.
Divyansh Bose (verified owner) –
Superb MQ-7 CO Carbon Monoxide Coal Gas! Using it in my environmental monitoring system. Very reliable data.
Vansh Gupta (verified owner) –
Perfect for my weather station. This MQ-7 CO Carbon Monoxide Coal Gas gives consistent readings day and night.
Lalit Shah (verified owner) –
Love this MQ-7 CO Carbon Monoxide Coal Gas. Response time is fast and readings are stable.
Vaishali Krishnan (verified owner) –
This MQ-7 CO Carbon Monoxide Coal Gas is excellent for the price. My data logging project is working perfectly now.
Chirag Sethi (verified owner) –
This MQ-7 CO Carbon Monoxide Coal Gas works great with Arduino. Easy to wire up and code.
Tejas Dave (verified owner) –
Excellent MQ-7 CO Carbon Monoxide Coal Gas! Readings are accurate and consistent. Perfect for my project.
Aditi Singh (verified owner) –
This MQ-7 CO Carbon Monoxide Coal Gas works great with Arduino. Easy to wire up and code.
Ashwin Chopra (verified owner) –
Bought this MQ-7 CO Carbon Monoxide Coal Gas for my college project. Accurate readings, easy to code. Very happy!
Deepak Kapoor (verified owner) –
Average MQ-7 CO Carbon Monoxide Coal Gas. Readings fluctuate a bit. Works for rough measurements.
Arnav Desai (verified owner) –
Good MQ-7 CO Carbon Monoxide Coal Gas. Works as described. Calibration needed some patience but results are good.
Tejas Das (verified owner) –
Outstanding accuracy from this MQ-7 CO Carbon Monoxide Coal Gas. Compared with a professional instrument, readings match closely.
Rajesh Garg (verified owner) –
Love this MQ-7 CO Carbon Monoxide Coal Gas. Response time is fast and readings are stable.
Utkarsh Panchal (verified owner) –
Average MQ-7 CO Carbon Monoxide Coal Gas. Readings fluctuate a bit. Works for rough measurements.
Utkarsh Luthra (verified owner) –
Perfect MQ-7 CO Carbon Monoxide Coal Gas for my automation project. Integrates seamlessly with my microcontroller.
Farhan Verma (verified owner) –
This MQ-7 CO Carbon Monoxide Coal Gas is excellent for the price. My data logging project is working perfectly now.
Om Mittal (verified owner) –
Decent MQ-7 CO Carbon Monoxide Coal Gas for the price. Requires proper wiring but works well once set up.
Kabir Arora (verified owner) –
Superb MQ-7 CO Carbon Monoxide Coal Gas! Using it in my environmental monitoring system. Very reliable data.
Sonali Khurana (verified owner) –
Great MQ-7 CO Carbon Monoxide Coal Gas. Using it in my smart agriculture system. Reliable measurements every time.
Sahil Desai (verified owner) –
Very satisfied with this MQ-7 CO Carbon Monoxide Coal Gas. Library support is good and it’s easy to interface.
Farhan Agarwal (verified owner) –
Pretty good MQ-7 CO Carbon Monoxide Coal Gas. Documentation could be better but the sensor itself is solid.
Anil Tandon (verified owner) –
Great quality MQ-7 CO Carbon Monoxide Coal Gas. Calibrated it easily and the accuracy is impressive.
Swati Dave (verified owner) –
Very satisfied with this MQ-7 CO Carbon Monoxide Coal Gas. Library support is good and it’s easy to interface.
Raj Sharma –
Excellent sensitivity and range on this MQ-7 CO Carbon Monoxide Coal Gas. Works better than I expected.
Anjali Goyal (verified owner) –
Excellent MQ-7 CO Carbon Monoxide Coal Gas! Readings are accurate and consistent. Perfect for my project.
Abhishek Dhillon (verified owner) –
Outstanding accuracy from this MQ-7 CO Carbon Monoxide Coal Gas. Compared with a professional instrument, readings match closely.
Ishan Kamath (verified owner) –
Outstanding accuracy from this MQ-7 CO Carbon Monoxide Coal Gas. Compared with a professional instrument, readings match closely.
Kartik Mittal –
Perfect for my weather station. This MQ-7 CO Carbon Monoxide Coal Gas gives consistent readings day and night.