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Type K thermocouple, Temperature Sensor, Tool Park for DMM and Lab Instruments.
This is a K type thermocouple, with 3 feet insulated wire and K type 2-flat-pin mini plug. If you do not know what this is for, this item is not likely for you. This sensor goes with any equipment that takes K type thermocouple input, including clamp meter or multimeter. HVAC folks: its easier if you have 2 of the thermocouples when you are out taking system sub-cool and super-heat. one for each line, just switch at the plug. No waiting to switch the sensor tip location from line to line and wait for the temperature to get steady.