... through sensing tipMute feature includedCordless and portable, operates on 2 cell batteriesCarrying case includedFlexible and stainless probeOptional carrying holsterOptional reference leak ... applications such as erchloroethyl.SpecificationsPower supply: 3V DC, two cell Alkaline batteries Maximum sensitivity: R12,R22,R134a,0.5 oz/yr (14g ...