One, Product Features：

1. Temperature detection inside and outside the vehicle. Temperature measurement range: -50 to 70 degrees Celsius.

2. When the temperature is below -1 degrees Celsius, the ice formation alarm pattern is illuminated.

3. Real-time monitoring of the vehicle battery voltage, with a digital display showing the current voltage.

4. Time display function, with year, month, and day display when pressing the button.

5.12 and 24-hour display format.

6. Blue and orange backlight color conversion.

1. Insert the car's pointy cigarette lighter plug into the car's cigarette lighter, and place the outdoor probe on the inside of the car door to fix it. Start the car, and the display will show the current temperature inside and outside the car, the battery voltage inside the car, and the time.

2. When the temperature outside the car is between -1 degrees and 4 degrees Celsius, the ICE display pattern will appear, reminding you that the outside temperature is low and to pay attention to the anti-freezing maintenance of the vehicle.

4. The number on the right side of the screen displays the current battery voltage in real time. A. If the battery voltage is below 9V, the display on the right side of the screen will show a pattern: This indicates that the battery voltage is extremely low, and there is a risk of the vehicle shutting down. It is necessary to immediately detect the vehicle. B. If the battery voltage is between 9.1V and 11.5V, the display on the right side of the screen will show a pattern: This indicates that the battery voltage is low, and it is necessary to detect the vehicle. C. If the battery voltage is between 11.6V and 11.9V, the display on the right side of the screen will show a pattern: This indicates that the battery voltage is sufficient to start the car, but it is still low. D. If the battery voltage is between 12V and 12.4V, the VOL on the right side of the screen will show a pattern: This indicates that the battery voltage is sufficient to start the car. E. If the battery voltage is between 12.5V and 12.9V, the VOL on the right side of the screen will show a pattern:

This indicates that the car's battery voltage is normal. F. If the vehicle battery voltage is between 13V and 15V, at this time, the right display screen pattern is: This indicates that the battery voltage is too high. When the voltage reaches 14.8V or above, it is necessary to immediately detect the vehicle.

Push the switch on the side to switch between blue and orange backlight colors.

6. If the display becomes abnormal due to use or other factors, please remove the battery for a moment and then reinstall it. You can also press the "RESET" key with a sharp object to restart the use.

Section Three: Time Setting

1. In the general time state, press the TIME key for 3 seconds without moving, at this time, 12Hr or 24Hr flashes, indicating that you have entered the time setting state. At this time, press the UP or DOWN key to select the 12-hour or 24-hour display system.

2. Press the TIME key at this time, and set the following items separately: 12/24-hour format - seconds - hours - minutes - years - months - dates - Confirm and exit.

3. Press the UP or DOWN key to respectively increase or decrease the project.

4. In the general time state, press the TIME key once to switch to the display state of the month and date.

5. Press the °C/°F key to convert between Celsius and Fahrenheit.