Features:1. Temperature memory, low voltage display function.2. If there is no operation within 15 minutes, the machine will shut down automatically to save power.3. If the sensor have fault, the display will show it.4. The Fahrenheit and Celsius degrees display switch function.5. Temperature measuring element with accuracy of 1%, high accuracy.Specification:Material: plastic, stainless steelBattery model: 1 * LR44 battery (Not included)Temperature measurement range: - 50 to + 300 (- 58 to + 572)Resolution: 1Accuracy: -20 - 80) + / -1Package list:1 * Probe head1 * ThermometerOperation instructions:1. ON / 0FF: press this key to turn ON or off. The last measurement temperature will be displayed 1.5 seconds after starting up, and then the measurement mode will be entered. If there is no operation, the machine will shut down automatically after 15 minutes.2. / : click this button to achieve Fahrenheit in temperature measurement mode, Celsius.Temperature measurement and low voltage display: if the voltage is lower than 1.3V LCD will display low voltage.E00 will be displayed when the sensor is broken or lower than the measurement range, and E11 will be displayed when the sensor is short circuit or the actual temperature is high and the measurement range..