MQ 7 Gas Sensor

DETECTION CAPABILITY: Designed specifically to detect carbon monoxide (CO) gas in the air, enabling early identification of harmful CO leakage in indoor and industrial environments
DETECTION RANGE: Capable of sensing carbon monoxide concentrations typically from 10 ppm to 1000 ppm, providing effective monitoring of hazardous gas levels
POWER SPECIFICATIONS: Operates with a 5V DC supply, ensuring compatibility with common microcontroller platforms and embedded monitoring systems
INTERFACE DESIGN: Provides both analog and digital output signals, allowing flexible integration with microcontrollers, Arduino boards, and gas monitoring circuits
PIN CONFIGURATION: Equipped with a 4-pin interface (VCC, GND, DO, AO) where AO provides analog concentration output and DO provides threshold-based digital detection
SENSITIVITY CONTROL: Includes an onboard potentiometer that allows adjustment of the digital detection threshold according to application requirements
RESPONSE PERFORMANCE: Utilizes a metal oxide semiconductor sensing element, where the conductivity changes based on the concentration of carbon monoxide gas in the surrounding air
MODULE DIMENSIONS: Compact module design measuring approximately 3.5 × 2 × 1.1 cm, making it suitable for embedded safety and monitoring systems
APPLICATION SCOPE: Widely used in domestic gas leakage detectors, industrial CO monitoring systems, portable gas detectors, safety alarms, and environmental gas monitoring projects