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Available charging， data transmission
Voltage， current switching display
Measuring range: DC 3~8V
Current: 0~3A
Error: 1%
Screen size: 0.4inch
Dimensions: 2.68x0.91x0.47inch (6.8x2.3x1.2cm)
Color: Silver + Translucent blue
Compact and easy to carry
Power free， plug and play
It can easily measure output voltage of the USB port and the device operating current or load voltage