Kws-V21 เครื่องทดสอบมัลติมิเตอร์ Usb สําหรับโวลต์แอมป์ Mah พร้อมจอแสดงผล Lcd

KWS-V21 USB Tester Mini multimeter for Reading Volt Amp MAh with LCD Display Charging Status Checker Charger Detector Description: Brand: XT-XINTE Colour: Black specification: Size: 73x23x13.5mm Weight: 20g Voltage: Input / Output: 4-20V Current: Input / Output: 0-3A Features: 1. Safe charging, real-time monitoring to master your charging data. 2.100% new and high quality 3. USB charger mobile power tester power detector voltage ammeter 4. It can measure the voltage, current, power, capacity and timing of the port (USB PC, mobile phone charger, car charger, mobile power supply, etc.). 5. Suitable for laboratory and personal use, a wide variety, easy to use, easy to carry alone, no additional power supply, plug and play. 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 Package: 1 x USB current voltage capacity tester