Round Voltage Meter DC - 5V-15V with Rainbow DialThe rainbow dial digital voltmeter gives the user quick visual color-coded voltage information. Red/yellow for low voltage. Green for normal voltage. The compact round size allows for installation in a wide variety of locations. For use with 12V systems. IP65 rating. Injection molded nylon. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.