It is a Voltmeter/Digital Voltage Meter/Digital Meter/Tester, Measuring Voltage Range: DC 3.0~30V Two-wire access, Application: industrial equipments,electronic equipment, Power distribution box, distribution cabinet, regulators, teaching aids, household small distribution box, Storage Battery Car,Motorcycle, Car, E-bike, ATV, Scooter, and All kinds Voltage Measuring.platforms.