The TMD-10 is a dual input thermometer that accepts type K and J thermocouples and is ideal for HVAC/R technicians, electricians, research, industrial process, and quality control. The dual inputs allow easy superheat and sub-cool temperature measurement as well as cut-out and in temperature measurements. The triple display shows T1, T2, and T1 - T2 and includes Hold, Min/Max, Relative, and Selectable deg F or deg C.