อุปกรณ์วิเคราะห์การจ่ายไฟฟ้าของ USB สำหรับการชาร์จทุกชนิดครับ Very simple, practical small instruments: ◆ portable, no external power supply, and other ancillary equipment, plug and play; ◆ power supplies, chargers, computer USB, car charger and mobile power USB output can detect any money, you can easily measure the USB port of the load voltage, load voltage and current of the device at work, and to judge the performance of the charger and charging cable meets the requirements; ◆ simple, wide application: USB voltage and current alternates, test results clearly understood, for factories, laboratories and ordinary users. Technical Specifications: Size: 53x22x15mm; male and female plug length 35mm. Scope of work: Voltage 3.5V-7.0V; Current 0A-3A; Resolution: Voltage 10mV current 1mA; Error: voltageอ่านเพิ่มเติม