It is a Digital Voltmeter/Voltage Meter/Digital Tester, Measuring Voltage Range: DC 0~99.9V, Power Supply Voltage: DC 7~30V, 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.