12V Car Digital ClockF/C Thermometer Hygrometer

12VCarDigital Clock F/C Thermometer HygrometerFeatures:Color: BlackMaterial: PlasticSize: 141x61x15mm/ 5.55x2.40x0.59Power Supply: DC 12V Car Charger or 3V CR2032 Lithium Battery(Included)Main Function: - Time Display/ Alarm and Snooze/ Indoor and Outdoor thermometer/ 12 and 24 hours exchangeable/ Min.Max. -Temperature RecordThermometer: C/ F exchangeable-In normal time display status, press holding MODE/ SET key for 2 seconds to start, you will see 24Hr or 12Hr flicker-Press MODE/ SET key to change setting items in sequence of 12/ 24 hours - Hour - Min - Exit-Press MAX/ MIN key to setting the corresponding item-In normal time display status, press MODE/ SET key once to check alarm status-Press holding AL ON/ OFF key for 2 seconds will shift alarm on/ off. When it is set to on, there will be a bell icon on LCD-Continue press holding MODE/ SET key for 2 seconds to activate setting, you may choose setting items in sequence of HOUR - MIN- EXITAlarm will last for 1 min. Press any key to stop, press AL ON/ OFF key will activate 8 min. snooze function-When adjusting, press holding MAX/ MIN key for 2 seconds will accelerate the steps-Press ℃/ ℉ key will shift temperature display between Celsius and Fahrenheit-Press MAX/ MIN key will display the Min. and Max. record for temperature, in mode of MAX/ MIN display, press MODE/ SET keywill eliminate all the records-The MAX/ MIN record will be daily auto cleared at 12:00Note: The battery just use for memory, do not for power, you must co