DIY Tools Arduino Shield Alcohol Gas Sensor Module MQ9MIB-INSTRUMENTSFeaturesFirst,size: 32mm X22mm X24mmL * W* HSecond, the mainchip: LM393, MQ-9gas sensorsThird, theworking voltage: DC 3-5VIVcharacteristics:1, with thesignal outputinstructions;2, thedualsignal output(analog output, andTTLlevel output);3, TTLoutput validsignal is low,can bedirectly connected toMicrocontroller;4,0 ~ 5Vanalog outputvoltage,the higher thevoltagethe higherthe concentration;5,carbon monoxide,combustible gashas a goodsensitivity;6,with a longservice lifeand reliablestability;7, rapidresponse and recoverycharacteristics;V.Application:Family orthe factoryforthe gasleak detectiondevice,suitable forcarbon monoxide,combustiblegasmonitoring device, cantest thecarbon monoxide,combustible gas10 to 1000ppm CO, 100 to 10000ppmrange;Including：1pcs ＭＱ９ ｍｏｄｕｌｅ PaymentShippingWe accept Paypal, credit card through Paypal. Buyer may need to pay for import tax depend on your country's custom. You can ask us for more detail.We ship to international and item will be shipped by airmail from HongKong. Items are shipped within 2-3 business day after receive cleared payment. An additionalUSD8for insurance Most item will arrive within 8-14 business days. It depend on your location. In some case, ship to some countries will take over 3 weeks, especiallybrazil, Italy andFrance .. List your items fast and easy and manage your active items.