Product Name : Thermocouple Probe;Type : PT100 Type;Temperature Range : 0C-400C Sensor Size : 5 x 50mm/ 0.2 inch x 2 inch (D x L);Fork Pin Size : 9 x 5mm/ 0.4 inch x 0.2 inch(L x W) Pin Spacing : 3mm/ 0.1 inch;External Shield Material : Metal Total Length(.) : 2M / 6.6 Ft;Color : Silver Tone Weight : 138g; 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. Grounded type is more sensitive to temperature, can help to measure temperature fasterly. 5 x 50mm sensor PT100 type Thermocouple with flexible spring built in. 3 terminals for easy connection. Temperature measurement range is from 0 celsius to 400 celsius degree. Widely used for industrial or laboratory to test equipments temperature. Package Content : 3 x Earth Thermocouple Probe Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.