The MQ9 breakout board detects carbon monoxide, methane, propane and other flammable gases so that the right measures can be taken in good time. The sensor detects carbon monoxide at 10-1000 ppm and other combustible gases at 100-10000 ppm. The digital and analog outputs are located on the vias, marked DO and AO. The digital output can be obtained by setting a threshold value with a potentiometer. The analog output depends on the intensity of the gases. Technical data https://elecena.pl/product/25644885/333123-developer-boards-gas-sensor-propane-methane-mq-7 2024-03-27 https://elecena.pl/product/25644885/333123-developer-boards-gas-sensor-propane-methane-mq-7 2025-04-07