Description: 1. Features with 1meters long, 8mm thread diameter, 5cm probe length thermocouple. 2. A thermocouple is a device consisting of two different conductors (usually metal alloys) that produce a voltage proportional to a temperature difference between either end of the pair of conductors. 3. Grounded type is more sensitive to temperature, can help to measure temperature fasterly. 4. PT100 type Thermocouple with flexible spring built in. 5. 3 terminals for easy connection. Temperature measurement range is from 0 celsius to 400 celsius degree. 3. Widely used for industrial or laboratory to test equipments temperature.