Features Size: 32 x 20 x 22mm / 1.25 x 0.78 x 0.86" The main chip: MQ-4 gas sensing probe Operating voltage: DC 5V Power (current): 150mA DO Output: 0.1V/5V AO Output: 0.1~0.3V Indication of the signal output Dual signal output (analog output, and TTL level output) TTL output signal is low. (When low output signal light, and can be connected directly to the microcontroller) 0 ~ 5V analog output voltage, the higher the concentration, the higher the voltage. Has better sensitivity for natural gas.
Applications: Suitable for home or factory methane gas, natural gas, and other monitoring devices
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