NH3/CR-200, Spare sensor NOTE! 0-100ppm NH3 (TR-EC)SKU: SEN021Ppm:0-100Sensor Technology:electro-chemicalGas:nh3This product is sold through a distributor:Select your prefered countryEstoniaNorwayVietnamGermanySwitzerlandSingaporeFranceNetherlandsAustraliaRomaniaSpainBelgiumCzechiaItalySwedenHungaryNew ZealandLithuaniaFinlandLatviaEstoniaBeijer Ref Eesti OUVisitNorwayModerne KjølingVisitShow moreDescriptionOption: 230V AC socket