UEI - The DT200 has the following features: -328° to 2498°F (-200° to 1370°C) Triple display Backlight Dual input Differential temperature (ÄT) Time-stamped multifunction record Relative function displays Accepts k, J and T thermocouples Data hold Five year limited warranty Standard Accessories: Battery . 9V Replacement Thermocouple (2 included) . ATT29A