It is a Digital Voltmeter/Digital Meter/Panel Meter/Tester, Measuring Voltage Range: DC 3.3V~17V (Can Measure Power Supply 3.3~17V Directly), Input Voltage Range: DC 3.3V~17V, It has small size, high efficiency, long term stable and reliable quality, easy installation and use. 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.