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potentiometer with switch can cut off the power supply directly counterclockwise
1 * Set of Mounting Screws
A breadboard is basically a base for prototyping or testing of electronic circuits
a fire-retardant standards
Manual reset switch
DUAL USB CURRENT VOLTAGE CHARGER DETECTOR BATTERY TESTER VOLTMETER AMMETER DIGITAL METER potentiometer with switch can cutUSB Charger Current Voltage Charging Detector battery Tester Volt meter Ammeter Features: 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 (0~5A) can detect mobile phone charger voltage