Features: Dual Type K thermocouple inputs. Large display with black light. Max/Min/Avg reading recording function. Data hold function. Temperature unit °°, K switchable. Automatic power off of the configuration. Low battery indicator. Operation: 1. Turn on and oFf your meter Press the power button to turn on the meter. After 10 minutes without any operation, the meter will automatically shut down. Press the power button again to manually turn off the meter. Press the Max button, then press the power button to turn on the meter, this meter will run all the time until the battery runs out. 2. Hold function, Press the hold button to freeze the current temperature reading display. Press this button again to return to the previous mode. 3. Max/Min/Avg value measurement function Press the Max tp button to select the maximum reading, minimum reading, average reading display mode. 4. Backlight Function Press the backlight button to turn on/off the backlight. 5. Temperature Unit Switching Function Press Units to switch temperature units, C/F/K. 5. The PIf replacement battery meter does not turn on as usual or the LCD will show a low battery icon, replace the batteries with a new 9V battery as soon as possible. Dispose of the battery pack at an environmentally safe recycling facility. Specification: Power Supply: 9V Measuring Range: -50 - 1350° Accuracy: ±(0.15%rdg + 1°/1.8°) Operating Temperature: 0 - 50° (32 - 122°) Operating Humidity: 10 - 90%RH Storage Temperature: -10 - 60° (14 - 140°) Storage Humidity: 10 - 75%RH Material: Plastic & Metal Dimensions: 16 x 5.5x 3cm/6.5 x 2.17 x 1.18inch Color: Black Quantity: 1 Pc Note: 1. Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Included: 1 x Digital Thermometer 4 x Thermocouples 1 x Bag 1 x User Manual