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MQ-9B - 10V CO CH4 Carbon Monoxide Methane Toxic Gas Sensor Plastic Cap

Winsen Sensor

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Manufacturer Part Number:
₹238.36 inc. GST
₹202.00 ex. GST
₹238.36 inc. GST
₹202.00 ex. GST


Sensitive material of MQ-9B gas sensor is SnO2, which with lower conductivity in clean air. It detects carbon monoxide (1.5V) by method of cycle high and low temperature. At high temperature (5.0V), it can detect CO as well as clean the other gases adsorbed at low temperature. The sensor’s conductivity gets higher along with the CO and CH4 gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.


Technical Specifications

Winsen Sensor
Sensor Type:
Standard Encapsulation:
Plastic, Metal cap
Detection range:
10~500ppm CO,300~10000ppm CH4
Loop Voltage:
< =10V DC
Heater Voltage:
5.0V AC or DC (High tem.), 1.5V AC or DC (Low tem.)
Heater Time:
60S (High tem.), 90S (Low tem.)
Load Resistance:
Target Gas:
Carbon Monoxide CO
Heater Resistance:
29Ohm (room tem.)
Heater consumption:
< =900mW
Rs(in air)/Rs(in 150ppm CO)>=5 Rs(in air)/Rs(in 5000ppm CH4)>=3
Output Voltage:
2.5V ~4.3V (in 150ppm CO) 2.0V ~ 4.0V (in 5000ppm CH4)
Concentration Slope:
< =0.6(R300ppm/R50ppm CO),
Tem. Humidity:
20C , 55%+-5%RH

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.