
USB 3V-9V LCD DISPLAY VOLT/CURRENT/CAPACITY METER
The VAM39U USB LCD Display Meter monitors voltage, current, and capacity of USB-powered devices. With a 4–20V range and 0–3A current measurement, it provides accurate real-time readings. Compact, portable, and plug-and-play, it’s ideal for testing chargers, phones, and USB devices in labs or homes.
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