MQ 7 Gas Sensor for Arduino/Raspberry PiSKU 2002

Sensors & Modules

MQ 7 Gas Sensor for Arduino/Raspberry Pi

₹109

01 — About

What it does

The MQ 7 Gas Sensor for Arduino/Raspberry Pi is a highly sensitive carbon monoxide detection module. It provides reliable CO concentration measurement with both analog and digital outputs for safety monitoring applications.

Key features

  • High sensitivity to carbon monoxide (CO) gas
  • Dual output – analog and digital for flexible interfacing
  • Adjustable sensitivity via onboard potentiometer
  • Fast response and recovery characteristics
  • Long lifespan with stable performance
  • 5V operation compatible with Arduino and Raspberry Pi
  • Compact module for easy integration

Good to know

  • Requires alternating 5V/1.5V heater voltage for accurate readings
  • 48-hour initial burn-in required for stable operation
  • Sensitive to temperature and humidity – calibrate accordingly
  • Not a certified safety device – for hobby/educational use
  • Digital output threshold should be set after calibration

02 — Datasheet

Specifications

08
Model
MQ-7
Operating Voltage
5V DC
Output Type
Analog + Digital
Detectable Gas
Carbon Monoxide (CO)
Detection Range
20-2000 ppm
Preheat Time
48 hours (first use) / 60 seconds (cycle)
Operating Temp
-10°C to +50°C
Heater Voltage
1.5V ± 0.1V (alternating)