We are offering environment tester. Confirms to standard : iec 1010-1 cat iii 600vdisplay : 3999 counts digits 14 mm highdc voltage : 0.4/4/40/400/600vaccuracy : 0.7%dca : 40/400ma 1.2% 10a2.0%resistance : 400/4k/40k/400k/4m1.2% 40m2.0%frequency : 10/100/1k/10k/100khz2.0%temperature : -20c400c3.0%(0.1c) , 400c1000c 3.0%(1c) sound level : 35 100db4dbdata hold, auto rangerelative measurement, white back lightac voltage : 4/40/400/600 v, accuracy : 0.8%aca : 40/400ma1.5%, 10a3.0%capacitance : 4n/40n/400n/4/40/200f , 3.0%duty cycle : 0.1%99.9% 3.0%humidity : 30%95% rh5.0%rh light (lux) : 4000 lux/40000 lux5.0%continuty test :yespower : 9v(6f22)x1power saver : auto power offsize & weight : 185x85x44 310g. Battery included accessories : instruction manual, test leads, "k" type thermocouple operating temperature : 0c40c.