Amprobe TMD-51 Thermometer K/J-Type with Memory Portable, dual-input thermometer for reading temperatures from two sources simultaneously, and built-in memory, and is used in quality control and HVAC, electrical, industrial, and automotive maintenance Accepts K- and J-type thermocouples Dual-scale temperature readings range from -328 to 2,498 degrees F (-200 to 1,370 degrees C) Dual-input thermocouples for superheat and subcool applications, and cut-out and cut-in temperature measurements, and offset mode compensates for thermocouple error Built-in memory saves up to 125 sample readings, and backlit LCD screen with a data hold feature to save temperature readings for later viewing, maximum and minimum temperature with elapsed time, average and relative temperature calculations, and low battery indicator