Feature:1. MULTIFUNCTIONAL: Thermometer with , , K switchable, reading lock function, fast sampling speed and automatic temperature compensation, low battery indication and automatic power off function, etc.2. HIGH ACCURACY: The temperature meter is controlled by a kind of single chip software, which is accurate and reliable, and can use any K type thermocouple as the temperature sensor.3. EASY TO OPERATE: The thermocouple thermometer operates with only 6 simple buttons and has clear instructions for beginners and professional users.4. ABS HOUSING: Thermocouple thermometer is made of ABS, with the design of standing leg bracket, the outer layer with shock proof protective cover, can extend the life of the thermometer in many ways.5. DOUBLE ENDED INPUT: In addition to the maximum, minimum, average, data hold, and auto shutdown functions, a special temperature difference calculation function is designed to make it easy for users to find the difference between 2 samples.Specification:Item Type: Contact Digital ThermometerMaterial: ABSDisplay: 5 digit LCD, maximum display 88888Measuring Range: -50.0-1370.0, -58-2498Resolving Power: 0.1, 0.1Accuracy: 0.5% (not including sensor error)Storage Environment: -10-50 (-14-122), humidity <80%Operating Environment: -10-50 (-14-122), 0-70%RhPower Supply: 1 x 6F22 9V battery 800mah (shipped with matching battery)1. Open the package, take out the instrument and put on the battery and put the battery cover and shockproof guard set.2. Press the POWER button to turn on the power, (there will be a short stay, which is normal) and insert the measuring probe (thermocouple) into the measuring input port according to the positive indication, and warm up for 1 minute. For the convenience of users, this instrument is set up with three selectable temperature modes (, , K). If you need to choose between Celsius and Fahrenheit, thermodynamic temperature mode, press , , K key to switch3. Place the other end of the probe at the place you want to measure, wait for the value on the instrument display to stabilize, at this time the value on the instrument display is the temperature value of the measured object.4. When you need to keep the measurement data, press HOLD to keep the reading, the display will show the symbol, and the display value has been locked, no longer change; press HOLD again to cancel the reading to keep the function, and continue the normal measurement.5. Press MAXIMUM,MIN,AVG keys, will be sequential cycle for the maximum value lock, minimum value lock, average value lock and other functions of the conversion, so that users understand the law of temperature change.6. Insert two thermocouple probes into the T1, T2 measurement input port (can also be inserted only one), press the T1, T2 key, you can measure the temperature of two different objects, LCD display T1, is the temperature of the object T1, LCD display T2, is the temperature of the object T2. Press the T1,T2 key, then the LCD shows T1,T2.(that is, the temperature difference between two different objects) can measure the temperature difference between two different objects value.7. After the measurement is complete, press the POWER key to turn off the instrument power..Package List:1 x Contact Digital Thermometer2 x Probe1 x Battery1 x Instruction