It is a Voltmeter/Digital Meter/Tester, Measuring Voltage Range: DC 0 ~ 99.9V, Power Supply: DC 7~28V; 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.