Features: This digital thermometer uses a thermocouple with microprocessor as the temperature sensor. It has the following features: ? Suitable for various thermocouples, such as K, J,T, E, R, S, N ? It can show results with °C, °F and K (Kelvin) ? Maximum, minimum and average valuemeasurement ? Data hold ? Thermocouple deviation compensation ? Relative time display ? Automatic power-off (automatic power-off time can be set by users) ? Self-calibration (please read 'User Self-calibration' section carefully before using this function) ? Automatically and manually save data ? USB port ? Dual-line input (T1, T2)