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MQ-4 Methane Natural Gas Sensor Detector Module for Arduino
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