VST 7010V Digital Thermometer Clocks Voltmeter Double Background Light.

Features: 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. 7. 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. Specification: Temperature can switch C / F Temperature measurement, measurement range: -50C ~ 70C Temperature display resolution: 1C, temperature accuracy: 1.0C Temperature measurement sampling cycle: 20 seconds LED backlight, power supply with a car when backlit, LCD display contents all, if the spare battery, no backlight, LCD display only the time. Car battery voltage indicator. Size: 130 x 55 x 22mm Weight: about 180g Note:the product have spare button battery power and it need to access external power supply, then the backlight can work Package Included: 1 x VST 7010V Thermometer Clocks 1 x English User Manual Details Pictures: