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Dual Gas CO and CH4 Detection Sensor - MQ-9B

SKU 3840
Save 22%
Original Price £6.00 inc VAT
Current Price £4.67 inc VAT
£3.89 ex VAT
3 in stock.

The MQ-9B is a CO and CH₄ gas detection sensor from Winsen. The sensing material of the MQ-9B is SnO2, which has low conductivity in clean air. It detects carbon monoxide (1.5V) by a method of cycling high and low temperatures. The sensor’s conductivity gets higher with the CO and CH₄ gas concentration rising. The sensing range is 10-500ppm CH₄. A simple circuit makes measuring this change in conductivity and turning it into data fairly straight-forward, but does require some calibration.

Please Note:

  • PCB is not included.