The wrap-tab allows the thermocouple wire to conveniently store on the plug Just wrap the excess wire around the wrap-tab No more tangles * Accuracy: +/- 4-Degree F (2-Degree C) ; ±1-Degree F (05-Degree C) after field calibration, 32 to 176-Degree F (0 to 80-Degree C) * Temperature range: -50 to 900-Degree F (-46 to 482-Degree C) * Thermocouple conductors: K-type nickel chromium/nickel aluminum Calibration and atmosphere will affect * maximum useful temperature The fiberglass wire insulation is designed to withstand a maximum continuous use at 900-Degree F (482-Degree C)