The MQ7 gas sensor module is a costeffective, low-power solution designed specifically for detecting carbon monoxide (CO) in the air . Utilizing a tin dioxide (SnO2) semiconductor sensitive layer, its conductivity increases with the concentration of CO, making it ideal for home and industrial safety applications .
| Parameter | Value |
|---|---|
| Target Gas | Carbon Monoxide (CO) |
| Detection Range | 10-10,000 ppm |
| Operating Voltage | 5V DC |
| Output Signal | 0-5V Analog (AO) & TTL Digital (DO) |
| Load Resistance | 10kΩ (adjustable) |
High Sensitivity - Excellent response to carbon monoxide and hydrogen .
Fast Response - Response time of ≤1 second .
Adjustable Sensitivity Builtin potentiometer for setting the digital trigger threshold .
Long Service Life - Stable and durable construction .
Easy to Interface Standard 4pin header (VCC, GND, DO, AO) compatible with microcontrollers .
√ On-board power and signal indicators.
√ 4 mounting holes for secure installation .