thermocouple thermometer main unit ranges from -50°C to 1370°C(-58°F to 2498°F) and includes two thermocouples and 2 Stainless Steel K Type Thermocouples that can measure -50 to 500°C(-58 to 932°F). Support °C, °F, K temperature modes to meet your measurement needs. The k type thermocouple is equipped with a calculation function to measure temperature difference between two samples with a reading accuracy of 0.1-0.4° C. In addition, the thermocouple also has MAX/MIN/AVG, Data Hold, automatic power off function, so that your measurement work is more efficient and convenient. thermocouple thermometer is battery-powered, portable, built-in folding frame, only 6 simple buttons, clear instructions for use, suitable for beginners, engineers, scientific researchers, laboratory technicians, factories, hospitals, families, etc. Our thermometer is made of high-quality materials to reliable performance in a variety of working environments. The main unit is protected by a removable silicone rubber to prevent accidental drops and shocks and extend service life. ac temperature gauge are suitable for high temperature measurements in stainless steel, ovens, furnaces, ceramics, ceramics, molten metals, and other industries. Colour:As Shown Material:Metal + Plastic Package Contents: 1 x K-type thermocouple, 2 x Wired K-type bead tip thermocouples 2 x Stainless steel K-type thermocouples 1 x 9V battery 1 x Silicone rubber sheath Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.