【Range 】 Voltage range 15V, RED LED 11.3V-11.9V indicates the battery needs to be changed, YELLOW LED 12.0V-12.5V normally indicates when the car engine is off, the GREEN LED 12.6V-15V indicates normally on when motor is running. 【Real-time voltage display 】 LED display with 3 indicator colors to show different voltage status, helps to check vehicle battery status obviously and improves safety perfectly. 【Compatibility 】The 12v voltmeter is universally suitable for most DC 12V vehicles, such as motorcycles, cars, boats, ATVs, UTVs, RVs, trailers, trailers, etc. 【Safety first 】 12v Voltage Indicator Used to monitor storage battery voltage, with reverse connection protection. You can record your battery status in time between full charge and discharge. The voltage measurement can also be used for other products. Includes 2 short wires for installation. 【Easy to use 】With the Twist-and-Lock system, it is mini and easy to install, ideal for checking the tension. Features: - This voltmeter is used to monitor battery voltage and capture your battery voltage status over time - It flashes when the voltage is too high. - There is an LED display with 3 different indicators showing different voltage levels to check vehicle battery status and improve safety. - It is waterproof and durable for a long period of use. - With twist and lock system, it is mini size and easy to install. - It is universally suitable for most DC 12V vehicles, such as motorcycles, cars, boats, ATVs, UTVs, RVs, trailers, trailers, etc. Specifications: Material: ABS Color: Black shell Input voltage: DC 12 V Voltage measurement range: 5 - 15V (display digital blue) LED color: red (11.3V-11.9V), yellow (12V-12.5V), green (12.6V-15V) Size ( L x W): 4.1 x 3.7cm / 1.61 x 1.46inch Package weight: about 22g Spread content: 1 x LED display voltmeter 2 x connection terminals