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KWS-V21 20V 3A USB Detector with Auto-Save Feature
Key Highlights: Compact, dual‑display USB tester that measures voltage (4‑20 V), current (0‑3 A), power and battery capacity for phones and power banks.
Features:- Miniature USB meter capable of measuring voltage, current, power and capacity
- Simultaneous voltage and current display for easy reading
- Compatible with a wide range of power‑supply outputs
- Durable construction with safety protection
- Small, lightweight and portable
- Calculates capacity and efficiency of mobile phone battery power banks
- Voltage range: 4‑20 V
- Current range: 0‑3 A
- Power: 15 (W)
- Power supply voltage: 4-30 (V)
- Measurement range: 0-3 (A)
- Resolution: Voltage is 10mV, current is 10mA.
- Error range: voltage<± 1%, current<± 2%.
- Full scale voltage drop: 200mV.
- Operating temperature: 0-60 ℃.
- 1 x USB current Voltmeter
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