KWS-V21 USB Current เครื่องทดสอบแรงดันไฟฟ้า Volt Current Charger ความจุ Tester Mete

1. The IN- input is connected to the output port of the charger. 2. After the RTZ-clear key is pressed for 3 seconds, the screen display is cleared. 3. The OUT-input is connected to the USB port of the data cable. 4. Input voltage display window (4-20V) accuracy ± 1% 5. Charging current display window (0-3A) accuracy ± 1% 6. Battery capacity display window (0-99999mAH) 7. Working time display window (0-99H) Unit: minute