Description:
1. Same screen display: hour, minute, week, indoor temperature, outdoor temperature and voltage.
2. It can be switched in 12/24 hours.
3. With alarm clock and snooze function.
4. The temperature can be switched to display Celsius or Fahrenheit, and the temperature measurement range is -50--70 degrees Celsius. The temperature measurement sampling period is 20 seconds.
5. LED backlight function. When the car is powered, there is backlight, and the LCD content is fully displayed; when powered by the backup battery, there is no backlight, and the LCD only displays the time.
6. Car battery indicator function: 12V
7. Frost warning function. On the interface that displays the time, press and hold the Celsius Fahrenheit switch for 2 seconds to turn the indoor and outdoor frost alarm on or off. When the frost alarm function is turned on and the temperature is within the range of -1--4 degrees Celsius, a 30 second alarm will be issued and the mark will flash.
Instructions
1 - remove the tape from the battery compartment.
2 - Find a suitable place to locate the unit.
3 - Locate the external temp sensor on the outside of the car (near the rearview mirror is an easy way to mount it).
4 - Plug the 12 volts connector into the car voltage system.

Change from degrees C to F (can be done only with the car engine running) press and hold the C/F key down until you hear a 'beep'. Then press that key again to change from C to F temperature readings.

Package including:
1x 4 in 1 Car thermometer