Description
MQ-7 CO Carbon Monoxide Coal Gas Sensor Module The MQ-7 CO Carbon Monoxide Coal Gas Sensor Module is a premier sensing device designed to accurately detect the concentrations of carbon monoxide (CO) in the air, making it indispensable for safety and industrial applications. Known for its high sensitivity, the sensor effectively detects CO gas levels through an electrochemical reaction. This carbon monoxide sensor module features both analog and digital outputs, allowing users the flexibility to easily interface with microcontrollers like Arduino. Whether for home safety or industrial use, this sensor delivers reliable stability and rapid response, ensuring accurate and timely detection within a range of 20 to 10,000 ppm.
Key Features - MQ-7 CO Carbon Monoxide Coal Gas Sensor Module
- High sensitivity to carbon monoxide gas
- Quick response and recovery time
- Operating voltage: DC 5 V
- Analog output voltage increases with higher CO concentration
- Long service life and reliable stability
- Detecting range: 20 to 10,000 ppm of carbon monoxide (CO)
- Simple drive circuit
Applications
The MQ-7 sensor is versatile, used in commercial CO detection systems to prevent poisoning hazards and in industrial settings for monitoring gas levels and enhancing workplace safety. Additionally, it integrates with IoT projects for smart home systems, contributing to enhanced air quality and CO monoxide detection. Its application extends to automotive uses, offering features like a co monoxide detector that seamlessly align with modern safety standards.
Technical Specifications
Product Specification | Value |
Item Type | Gas Sensor |
Model | MQ-7 |
Sensitive Material | SnO2 (tin dioxide) |
Operating Voltage (V) | 5 |
Sensitivity (dBm) | ≥ 3% |
Return Time | ≤ 30 sec |
Load Resistance | Adjustable |
Heater Resistance | ± 31 Ω |
Heater Current | ≤ 180 mA |
Heater Voltage | 5.0V ± 2V / 1.5 ± 1V |
Heater Power Consumption | Approx. 350 mW |
Heating Consumption | Less than 750mW |
Preheat Time | Approx. 20 seconds |
Output | Analog voltage signal |
Ambient Temperature (°C) | -20 ~ + 50 |
Humidity Range | ≤ 95% RH |
Oxygen Content | 21% |
How to Use - MQ-7 CO Carbon Monoxide Coal Gas Sensor Module
- Connect the sensor module to a 5V power supply.
- For analog output, observe the increase in voltage with higher CO concentrations.
- For digital output, calibrate using the onboard potentiometer to set the desired threshold level.
- Connect to microcontrollers like Arduino following the datasheet's circuit setup.
- Ensure adequate ventilation in testing environments for accurate readings.
- Allow a preheat time of about 20 seconds for optimal results.
Package Includes
1 x MQ-7 CO Carbon Monoxide Coal Gas Sensor Module
Additional Resources
Download DatasheetLearn more about Carbon Monoxide Sensor Module
Explore our sensors-modules Collection
Video Tutorials
Specification
Product Specification | Value |
Item Type | Gas Sensor |
Operating Voltage (V) | 5 |
Sensitivity (dBm) | ≥ 3% |
Return time | ≤ 30 sec |
Heater Resistance | ± 31 Ω |
Heater Current | ≤ 180 mA |
Heater Voltage | 5.0V ± 2V / 1.5 ± 1V |
Heater power consumption | approx. 350 mW |
Ambient Temperature (°C) | -20 ~ + 50 |
Humidity Range | ≤ 95% RH |
Oxygen content | 21% |
Length (mm) | 35 |
Width (mm) | 20 |
Height (mm) | 11 |
Weight (g) | 20 |
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