It is a Digital Current Meter/Digital Meter/Panel Meter/Tester, Measuring Current Range: DC 0~9.99A, Power Supply Voltage: DC 7~28V, It has Reverse polarity protection, 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 Current Measuring.platforms.