... thermocouples, Dual display, Record function. DM6803A+ 4 1/2 Dual display intelligent digital thermomterFeatures:1.Temperature measuring (accuracy±0 ... .3%) and alarming output function;2.Support K,E,J,T,N,B,R,S ... 1370°C0.1°C-200~0°C: ±(0.3%+2°C)0°C~800°C: ±(0.3%+1°C ... )800°C~1370°C: ±(0.5%+2°C)J-200~1200°C0.1°C-200~0°C: ±(0. ... 3%+1°C)0°C~1200°C: ±(0.3%+2°C)T-200~400°C0.1°C-200 ...