MQ7 Gas Sensor Module


This Carbon Monoxide (CO) gas sensor detects the concentrations of CO in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of 10 to 10,000 ppm.The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5V.


Specifications of MQ7 Gas Sensor:-

Size: 35mm × 22mm × 18mm
Detection of gas: carbon gas
Heating voltage: 5 ± 0.2V (AC · DC)
Working current: 140mA
Loop voltage: 10V (maximum DC 15V)
Load resistance: 10K (adjustable)
Detection concentration range: 10-1000ppm
Clean air voltage: ≤1.5V
Sensitivity: ≥3%
Response time: ≤1S (preheat 3-5 minutes)
Response time: ≤30S
Element power: ≤0.7W
Working temperature: -10 ~ 50 ℃ (nominal temperature 20 ℃)
Humidity: 95% RH (nominal humidity 65% RH)


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