Sada modulů MQ-2, MQ-3, MQ-4, MQ-5, MQ-6, MQ-7, MQ-8, MQ-9 a MQ-135  TECHNICKÝ POPIS OD VÝROBCE: MQ-2: • detection concentration: 300-1000 ppm (combustible gas) MQ-3: • size: 32*22*27 mm • main chip: LM393, ZYMQ - 3 gas sensors • working voltage: DC 5V • with a signal output instructions • two-way signal output (TTL level output and analog output) • TTL output signal for low level effectively (when the low output electric signal lights at ordinary times, can be directly by single chip microcomputer) • analog 0 - 5V voltage, the higher the concentration, the higher the voltage • it has a high sensitivity and good selectivity to ethanol steam • rapid response recovery features • used in motor vehicles and other no drunken drivers homework personal on-site testing, also used in other places of ethanol vapor detection MQ-4: • using high-quality dual-panel design, with power indicator and TTL signal output instructions • with a DO switch signal (TTL) output and AO analog signal output • TTL output valid signal is low (when the output low signal light can be directly connected microcontroller or relay module) • the analog output voltage, the higher the concentration the higher the voltage • methane, natural gas has better detection sensitivity • there are four screw holes for easy positioning • size: 32*20*22 mm • with a long service life and reliable stability • rapid response and recovery characteristics • input voltage: DC5V power (current): 150mA • DO output: TTL digital 0 and 1 (0. 1 and 5V) • AO output :0. 1-0. 3 V (relatively clean), the highest concentration of voltage around 4V MQ-5: • suitable for home or industrial on LPG, natural gas, coal gas monitoring devices • excellent resistance to alcohol, smoke interference • using high-quality dual-panel design, with power indicator and TTL signal output instructions • with a DO switch signal (TTL) output and AO analog signal output • TTL output valid signal is low (when the output low signal light can be directly connected microcontroller or relay module) • the analog output voltage, the higher the concentration the higher the voltage • for gas, natural gas has better detection sensitivity • there are four screw holes for easy positioning • size: 32*20*22 mm • with a long service life and reliable stability • rapid response and recovery characteristics • input voltage: DC5V power (current): 150mA • DO output: TTL digital 0 and 1 (0. 1 and 5V) • AO output :0. 1-0. 3 V (relatively clean), the highest concentration of voltage around 4V MQ-6: • suitable for domestic or industrial on LPG (liquefied petroleum gas), butane, propane, LNG (liquefied natural gas) detection devices • excellent resistance to ethanol vapor, smoke interference • using high-quality dual-panel design, with power indicator and TTL signal output instructions • with a DO switch signal (TTL) output and AO analog signal output • TTL output valid signal is low (when the output low signal light can be directly connected microcontroller or relay module) • 0 ~ 5V analog output voltage, the higher the concentration the higher the voltage • the propane, butane, LPG, LNG has a good detection sensitivity • there are four screw holes for easy positioning • sizes: 32*20*22 mm • with a long service life and reliable stability • rapid response and recovery characteristics • input voltage: DC5V power (current): 150mA • DO output: TTL digital 0 and 1 (0. 1 and 5V) • AO output: 0. 1 - 0. 3 V (relatively clean), the highest concentration of voltage around 4V MQ-7: • for home, carbon monoxide detection device environment • suitable for carbon monoxide and gas detection • detection of concentration: 10-1000 ppm CO • loop voltage Vc:.