MQ4 Natural Gas Sensor For Arduino
MQ 4 Natural Gas Sensor For Arduino
It has DO switch signal (TTL) output and AO analog signal output;
The TTL output valid signal is low. (When the output is low, the signal light is on, it can be directly connected to the MCU or relay module)
The voltage of the analog output, the higher the concentration, the higher the voltage.
It has good sensitivity to gas and natural gas detection.
there are four screw holes for easy positioning;
product dimensions: 32 (L) * 20 (W) * 22 (H)
