WOWOONE 9pcs Gas Detection Module MQ2 MQ3 MQ4 MQ5 MQ6 MQ7 MQ8 MQ9 MQ135 Sensor Module Each of Them 1pc Total 9pcs Sensor Starter kit

Features: 1.With signal output indicator light 2.Size: 32mm X22mm X30mm length * width * height 3.The main chip: LM393, MQ-x gas sensing probe 4.Working voltage: DC 5V 5.The dual signal output (analog output and TTL output) 6.The analog output and increased with the increase of concentration,the higher the concentration higher voltage 7.Has a very high sensitivity to sulfide, benzene vapor, smoke and other harmful gases 8.With a long service life and reliable stability 9.Quick response and recovery characteristics 10.With mounting holes, easy mounting 11.The probe can be plug design, convenient test Application: For harmful gas family, environment detection device, is suitable for the detection of the ammonia, aromatic compounds, sulfide, benzene vapor, hydrogen,smoke and other harmful gas, gas sensitive element concentration range: 10 to 1000ppm provides reference cases. Package Included: MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 each one total 9pcs