MQ-2 Smoke Gas LPG Butane Gas Sensor Module Tester For Arduino

Features: 1. Using high-quality dual-panel design, with power indicator and TTL signal output instructions 2. there are four screw holes for easy positioning 3. Analog output voltage with the higher concentration of higher voltage 4. TTL output valid signal is low. (Low-level signal when the output light can be directly connected to the microcontroller or relay module) 5. The switching signal having a DO (TTL) output and analog output AO Special note: After the sensor is powered, needs wait about 20S, measured data was stable, heat sensor is a normal phenomenon, because the internal heating wire. Specifications: Size: 32 x 22 x 27mm Chip: LM393, ZYMQ-2 gas sensors Working voltage: DC 5V AO output :0.1-0 .3 V (relative to pollution) the maximum concentration of a voltage of about 4V DO output: TTL digital 0 and 1 (0.1 and 5V) Input voltage: DC5V Power consumption (current): 150mA Package included: 1 x MQ-2 gas sensor module If you want another model, you can click on the ID Model Gas Detection Item ID MQ2 flammable gas/smoke 1144079 MQ3 alcohol steam 1414301 MQ4 Natural gas/Methane 1377624 MQ5 Liquefied gas/Methane/Coal gas /LPG 1378464 MQ6 Liquefied gas/Isobutane/Propane/LPG 1378477 MQ7 Carbon monoxide 915474 MQ8 hydrogen 1378425 MQ9 Carbon monoxide flammable gas 1378463 MQ131 Ozone Concentration 1183257 MQ135 Ammonia/sulfide/benzene vapor 1378465 A set of MQ 1005800