MQ-7

MQ-7 CO Gas Detection Sensor – Compact and Ultra‑Sensitive Metal‑Oxide Solution

The MQ-7 is a miniature, low‑power metal‑oxide semiconductor sensor designed to detect carbon monoxide (CO) from 10 ppm to 1000 ppm with high reliability. Its robust ceramic platform and integrated heater enable swift response in hostile environments, while the linear analog output allows seamless integration with modern microcontrollers and IoT systems.

• Fast Response / Recovery: 7 s / 45 s at 100 ppm CO
• Operating Voltage: 5 V ±10 % (typical)
• Sensitivity Range: 10 ppm – 1000 ppm CO, high selectivity to CO over H₂ and methane
• Common Use Case: Real‑time CO monitoring in automobiles, HVAC, industrial safety alarms, and residential leak detection