3 in 1 Temperature Voltage Alarm LED Display Car Thermometer Voltmeter Luminous Car Temperature Clock 12V Vehicle Interior Parts Feature:1. Multifunctional Electronic Clock Module: This car thermometer voltmeter is a multifunctional electronic clock module that combines time, internal and external temperature and voltage. It can display a single item or alternate items in a cycle and supports customisation of the items to be displayed. This makes it a useful tool in vehicles.2. High Precision Time Chip: This car temperature clock uses Epson's RX8025T chip, a clock chip with temperature compensation, for high time precision and accuracy, so you will always know the exact time.3. Waterproof Probe Temperature Measurement: The module comes as standard with two waterproof probes of 0.3 m + 1.5 m. The temperature voltage detector can measure the temperature inside or outside the car, with a temperature range of -35 to 120 degrees. This means you can know the temperature inside and outside the car at any time and adjust it as required.4. Brightness Adjustment: The digital clock voltage tester has a brightness adjustment function with 3 levels of brightness. It also has an auto-brightness function that automatically senses the light intensity and adjusts the brightness in different light conditions. This allows it to be displayed clearly at night and during the day.5. Easy to Install: This electronic clock voltmeter is simple and easy to install, it only needs to be fixed with screws. It is an easy-to-install, easy-to-use tool that helps you to keep track of the temperature inside and outside your car and to ensure that the vehicle voltage is stable. Specification: Origin: Mainland China Item Weight: 30 g Material Type: ABS Housing colour: blackFont display: Red Blue Green Optional.Operating voltage: DC 5-28VInstallation opening size: 19.5 x 56mm/0.8 x 2.2inchTemperature display range: -35 ~ 120 (error 1 degree)Voltage display range: 5.0 ~ 28 V (error 0.1V)Product size: 58 x 22mm/2.3 x 0.9inchWeight: 30gSuitable for: cars, trucks, off-road vehicles, agricultural vehicles, ships, etc.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-2cm measuring deviation due to manual measurement. 1 xCar Thermometer Voltmeter