... ,T,N,B,R,S thermocouples, Dual display, Record function. DM6803A+ 4 1/2 Dual display intelligent digital thermomterFeatures: ... .Support K,E,J,T,N,B,R,S thermocouples;3.It may set cold temperature automatic ... saving;4.°C and °F display;5.Dual display: display max .min and relative mV value ... %+2°C)Input resistance 1GΩ adoptsITS-90thermometric scale S-20~1760°C1°CB400~1800°C1°C400°C~800 ...