Measuring range: 3 v DC - 9 v, current: 0-3 a (error: + / - 1%) 5 a biggest support
After 5 a current (more than 3 a 3% error will be larger). Weight: 25 g packing: packed in anti-static bags

the latest USB voltmeter ammeter can easily measure the output voltage and device with USB port working current! (please note: it can only display to work with real time of electric voltage and current according to the facts, do not have to put all functions, namely cannot set the xyz voltage to current discharge! Small size, no need for power supply and other ancillary equipment, plug and play! Also detect any USB charger (computer USB, home charger, car charger) of the charging current and voltage, to judge the performance of the charger and charging line performance is in line with the requirements of! Applicability is wide and any phone, any electronic products, you can use, easy to operate, suitable for factories, exhibition presentation, laboratory and users!
Features:
1, this product can measure the USB power supply equipment when empty, the load voltage, the USB terminal voltage and current at work.
2, current and voltage loop display, use simple convenient and practical.
3, small easy to carry, no other power supply
Package contains:
1xUSB voltmeter ammeter