I NEED A MANUAL FOR DROK® 20″ USB Cables Digital Multimeter, DC Voltmeter Ammeter Watt Capacitance Meter, Battery Charing Wire Current Voltage Power Draw Tester, Female Micro Dual USB Output OLED dIsplay.
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Coudl you please tell us which product you bought?
And to find out solution, could you please send us a video to show us how you connect it and the flashes problem?
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