The tester USB Charger doctor can easily measure the output voltage of the USB port and the device Compact, no power, and other ancillary equipment, Plug and Play USB charger can also detect whether the target output voltage and current Used in factories, laboratories and users The tester uses a new generation of power four and a half double integral cycle conversion IC, with a precision bandgap reference, range accuracy, high precision, stable and reliable performance, strong anti-interference ability, high temperature can be used for measuring USB powered or power consumption of an interface, cell phone chargers, U disk and other products. It can be used to measure an empty USB-powered devices, voltage loads, USB terminal equipment working voltage and current. Current and voltage cycle, easy to use and practical. Compact and easy to carry, no additional power supply Specification: Measuring range :3.5-7V (V) Input voltage :3.5-7V (V) Output voltage :3.5-7V (V) Ambient temperature :0-60 Can easily measure the operating current of the output voltage of the USB port and equipment 2. smallsize , 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. Technical indicators: Scope of work: Current (0-2.5A) can detect mobile phone charger voltage compliance DC5V Operating Range : U = 3 ~ 7.5V I = 0 ~ 2.5A Resolution : Voltage 10mV current 1mA Error : voltage < 1% current < 2% Full scale drop : ( When measuring current ) 200mV 1 x USB Detector Volmeter Ammeter