Car Dashboard Digital Clock 4 in 1 Square inside Outside Temperature
Screen display: hours, minutes, seconds, day, indoor temperature, outdoor temperature and voltage.
Can 12/24 hour switch with alarm and snooze function.
Temperature can be switched to display Celsius or Fahrenheit, the temperature measuring range: -50--70 degrees Celsius. Temperature measurement sampling period of 20 seconds.
LED backlight. There used car powered backlight and LCD display entire content; when backup battery power to use, no backlight and LCD display only the time.
The car battery indicator: 12V.
Frost alarm function. Time on the display interface, press and hold degrees Fahrenheit switch button for 2 seconds to open or close the indoor and outdoor frost alarm. When the frost alarm is turned on, and the temperature inside (-1-4C) degrees Celsius, it will be issued a 30-second alarm, its symbol flashes.