... J,T,N,B,R,S thermocouples, Dual display, Record function. DM6803A+ 4 1/2 Dual display intelligent digital thermomterFeatures:1.Temperature measuring ( ... may set cold temperature automatic saving;4.°C and °F display;5.Dual display: display max .min and relative mV value of input temperature ... alarm is higher than or is lower than the set point ofAlarm and could be set alarming loop difference as well ...