This 4 In 1 Digital LCD Monitor Car Thermometer Voltage Meter Alarm Clock (12V-24V) includes the function of time, thermometer, voltmeter and backlight. It can inspect your automobile at real time effectively. There is alarm lamp to remind you to avoid icing may cause damage to your car as temperature lower freezing point. There are alarm voice and lamp to remind you to checking the storage battery as the voltage is excessive to too low. You can maintain your automobile by the real time data of voltage. In so small size, it won&acute;t take up too much space in your car. Also, it is a decorative item to make your car special and cool!<!--Features --><p>FEATURES</p><ul><li> Time / date display, 12 / 24 hour system conversion</li><li> Snooze function with 5 minutes snooze time</li><li> Capable of switching temperature display unit Celsius / Fahrenheit degree</li><li> Pedestal 180-degree revolve</li><li> Two colors blue / green of backlight for choice when the clock is powered by car cigarette lighter</li><li> Car battery voltmeter</li><li> Powered by car cigarette lighter charger or 2 x LR44 batteries (included)</li><li> Display accurate temperature readings in and outside of the car</li><li> Alert you to your car battery&acute;s voltage and its alarm sensor notifies you of excessive or under normal voltage operations</li><li> The LED backlight design allows you to accurately read the digits in the dark</li><li> Easy to install and use, a perfect accessory for your car</li><li> Also have the function of freeze alert</li><li> When it connects with car, its back light is light up and all the contents (including the time, temperature and volt) will be displayed on the LCD screen </li></ul><!--Specifications --><p>Specifications</p><table width="100%" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td width="131"> Voltage</td><td width="365"> DC 12-24V</td></tr><tr><td width="131"> Base Diameter</td><td width="365"> 4.5cm</td></tr><tr><td width="131"> Material</td><td width="365"> Plastic & Glass</td></tr><tr><td width="131"> Power</td><td width="365"> 0.6W</td></tr><tr><td width="131"> Power Cord Length</td><td width="365"> 59.06" / 150cm</td></tr><tr><td width="131"> Temperature Sensing Line Length</td><td width="365"> 78.74" / 200cm</td></tr><tr><td width="131"> Stand-by Power</td><td width="365"> 2 x LR44 Button Cells(Included)</td></tr><tr><td width="131"> Temperature Measurement Range</td><td width="365"> -10~50→</td></tr><tr><td width="131"> Temperature Display Resolution</td><td width="365"> 1 Degree</td></tr><tr><td width="131"> Temperature Accuracy</td><td width="365"> Plus / Minus 1 Degree</td></tr><tr><td width="131"> Temperature Measuring Duration</td><td width="365"> 60 Seconds</td></tr><tr><td width="131"> Color</td><td width="365"> Blue</td></tr><tr><td width="131"> Special Function</td><td width="365"> Time Display (12 / 24hour), Date Display, Dual Temperature Display, Alarm Clock, Snooze Function, Frost Alarm Function, Automobile Storage Battery Voltage Indicator Function, LED Backlight</td></tr><tr><td width="131"> Dimensions</td><td width="365"> (3.62 x 2.17 x 1.10)" / (9.2 x 5.5 x 2.8)cm (L x W x H)</td></tr><tr><td width="131"> Weight</td><td width="365"> 3.53oz / 100g </td></tr></tbody> </table><!--Package Includes --><p>Package Includes</p><ul><li>1 x Car LCD Clock</li><li>1 x Cigarette Lighter Charger</li><li>1 x Sensor</li><li>1 x Double-sided Adhesive Tape</li><li>1 x Bilingual User Manual in English and Chinese </li></ul><!--Extra Info --><!--produts_compatibility -->