TC source terminals and built in lead connector of same temperature (RJ compensation with auto reference joint point); the unit can be converted between Deg C and Deg F Outside place temperature detector with high accuracy of +/ 2 Deg C Big LCD can display the TC/RTD value and voltage/ resistance value, mA value and mA percent value corresponding simultaneously. Carefully designed the key layout, each pair of increase/ decrease key correspond with the set value on the LCD.