HIGH TEMPERATURE RESISTANCE: High temperature can be used for measuring USB powered or power consumption of the interface , mobile phone charger , U disk and other products.APPLICATION: USB powered devices can be used to measure air , voltage loads , USB terminal equipment working voltage and current .HIGH QUALITY: The tester uses a new generation of power four semi~ double loop integral converter IC , with a precision bandgap reference , range accuracy , high precision , stable and reliable performance , strong anti~interference ability.PLUG AND PLAY: Small size , no power , and other ancillary equipment, plug and play also detect USB charger output voltage and current are standard suitable for factories, Laboratory and users.EASY TO USE: Can easily measure the operating current of the output voltage of the USB port and equipment.Input / output voltage 3V-9VVoltage resolution: 0.01VInput / output current: 0A-5A (see the range of use 0-3A)Current resolution: 0.01AAccuracy: plus or minus 1%Line loss: about 0.1 ohmTest content: voltage, currentColour:blackMaterial:ABS Size:5 x 5 x 5cmPackage Contents:1x Multimeter MeterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.