Тестер USB вольтметр, амперметр, 3,5-30V, 0-5.1A - J7-t PRO plus

A new all-purpose measuring tool. The J7-t Pro Plus USB voltmeter/ammeter is one of the best devices in its class for measuring output/consumed voltage. It shows live data while charging devices through a standard USB/micro-USB cable.

This device connects between the power adapter and the cable running to your device. Once connected, the digital display shows the output data and electrical parameters of the USB port it's plugged into.

Sample readings from the J7-t Pro Plus USB voltmeter/ammeter:

• Vol: 5.12V - voltage reading
• Cur: 0.25A - current, accurate to two decimal places
• Cap: 386mAh (1.00) - average charge accumulated over the measured interval
• Ene: 2.119Wh - total accumulated charge on the device's battery (the device's own temperature during charging is also shown)
• Tme: elapsed charging time in HH:MM:SS format

System button functions on the J7-t Pro Plus USB voltmeter/ammeter:

• Quick press - switches between display modes
• Hold for 2-4 seconds - full reset

One standout feature of this tester is a special mode for use when syncing a gadget, portable HDD, or computer, and during USB data transfer. In this mode, it shows 4 pin voltage readings along with several related measurements.

This device helps protect your portable device from premature failure and helps you identify a faulty power adapter or battery.