MQ-7 Gas Sensor Carbon Monoxide (CO)

The MQ7 is a simple-to-use Carbon Monoxide (CO) sensor suitable for sensing CO concentrations in the air. It can detect CO-gas concentrations anywhere from 20 to 2000ppm. MQ7 is a high sensitivity to carbon monoxide and stable and long-life span.

Specifications:

– Circuit voltage: 5V±0.1
– Heating voltage (high): 5V±0.1
– Heating voltage (low): 1.4V±0.1
– Load resistance: Adjustable
– Heating resistance: 33Ω±5%
– Heating time (high): 60±1 seconds
– Heating time (low): 90±1 seconds
– Heating consumption: About 350mW
– Using temperature: -20°C-50°C
– Storage temperature: -20°C-50°C
– Relative humidity: Less than 95%RH
– Oxygen concentration: 21%(stand condition) the oxygen concentration can affect the sensitivity characteristic