3in1 Vehicle Car Kit with Thermometer, Voltmeter and Clock Allinone monitoring: This kit combines a thermometer, a voltmeter, and a clock in a single device for convenient vehicle monitoring. Clear daytime display: The large LED digits provide bright, easytoread information for daytime visibility. Temperature and voltage display: Monitor indoor and outdoor temperature readings as well as voltage levels with this 3in1 voltmeter. display: Easily switch between showing individual items or cycle through all three functions. which items are shown according to your preferences. Simple operation: Use straightforward controls to select the display mode and view the metrics you need. Designed for vehicle use: Built to operate within a car environment and help you stay informed on the road. Use scenarios Quick predrive check: View cabin temperature and battery/voltage status before starting a trip to ensure comfort and reliability. Extreme weather awareness: Monitor outdoor temperature to anticipate road conditions and plan accordingly. Long trips and routine monitoring: Cycle through time, temperature, and voltage to stay informed without distraction during extended drives.