It is a Voltmeter/Digital Voltage Meter/Digital Meter/Tester, Measuring Voltage Range: DC 0 ~ 200V ( Can Measure Power Supply Directly ), Power Supply Voltage: DC 7 ~ 25V; 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.