Description: This LED display volt meter is great for checking voltage. It can be used to monitor the storage-battery voltage and timely grasp the state of your battery voltage, and the voltmeter will flash alert when the voltage is too high. There are 3 colors of indications to show different voltage status which helps to test the vehicle's battery status obviously and improve safety perfectly. Features: 1. This voltmeter is used to monitor the storage-battery voltage and timely grasp the state of your battery voltage. 2. It will flash alert when the voltage reaches too high. 3. There is a LED display with 3 colors of indications to show different voltage status which helps to test the vehicle's battery status obviously and improve safety perfectly. 4. It is waterproof and durable for a long service time. 5. With twist and lock system, it is in mini size and easy to install. 6. It is universally fits for most DC 12V vehicles, such as motorbikes, cars, boats, ATV, UTV, camper, caravans, travel trailer etc. Specifications: Material: ABS Color: Black shell Input Voltage: DC 12V Voltage Measuring Range: 5 - 15V(blue digital display) LED Color: Red(11.3V-11.9V), Amber(12V-12.5V), Green(12.6V-15V) Size(L x D): 4.1 x 3.7cm/1.61'' x 1.46'' Package Weight: approx. 22g Package Included: 1 x LED Display Voltmeter 2 x Terminal Connectors Notes: Easy to install, but professional installation is highly recommended. .