Iztor 3 in 1 Car Inside Outside Thermometer Voltage Meter Voltmeter LCD Clock Alarm green + Orange Multi-function car cigarette lighter LCD clock Voltage: DC 12-24V,Time/Date display, 12/24 hour system conversion Supports the alarm clock and snooze for 5 minutes, after the alarm rings, press SNZ button to enter snooze mode, After the condensing function activated, if the temperature is -1C ~ 4C, it will alarm for 30 seconds. 180 base rotative, ergonomic design, easy to install, plug and play.