This thermometer is designed to work with 2 external K-Type thermocouples for high-temperature measurements. It has a wide range of applications in Ovens, Furnaces, Ceramics, Pottery, Molten Metal, and many other industrial uses. Any standard K-Type thermocouple connector can be used to replace the included thermocouples when it needs a replacement. Features: With 2 x Wired type K-type Thermocouples and 2 x Stainless Steel K-type Thermocouples Selectable °C, °F & K (Kelvin Scale) temperature modes Push Button Operation Wide temperature range High Resolution Maximum (MAX), Minimum (MIN) and Average Temperature Measurement (AVG) 2 temperature channel inputs: T1 & T2 Differential Temperature Measurement (T1 - T2) Low battery indication Data Hold function mode Compact and tough Overload & No thermocouple input indicator Auto Power Shut Off Specifications: Measurement range: Main Unit: -50~1300°C (-58~2372°F) Bead-type K-type Thermocouples: -50~400°C (-58~752°F) Stainless Steel Type K-type Thermocouples: -50~700°C (-58~1292°F) Switchable between °C, °F & K (Kelvin Scale) LCD Display: 5 digits Resolution: 0.1°C or 0.1°F Accuracy: ±0.4°C 0.1% Operating Temperature: 0 ~ 40°C (32 ~ 104°F) Operating Humidity: 0 ~ 70% (R.H.) Power supply: 9V Battery (included) Size: 149 x 71 x 41mm Weight: approx. 300g (including batteries) Set Includes: 1 x K-Type Thermometer 2 x Wired K-type with bead-type tips Thermocouples 2 x Stainless Steel Type K-type Thermocouples 1 x Silicon Rubber Holster 1 x 9V Battery 1 x English Instruction Manual Standard Factory Package