The second-generation UT658 series USB testers can inspect USB chargers, portable power sources, USB type A and C cables, and other electronic charging devices. UT658 measures output voltage, current, energy, capacity, circuit equivalent resistance, D+ and- voltages of USB data cables. This series is designed to be precise, reliable, stable, and portable. They are great tools for applications such as manufacturing verification, engineering testing, and DIYers. Features: Type-A interface The same screen shows voltage, current, power, capacity, etc. 10 sets of data storage Loop equivalent resistance measurement (1-480Ω) CE certification Support fast charging protocol (QC1.0/2.0/3.0Type A ) With a maximum 3A working current electronic load (LOAD version) Package Includes: 1 x UNI T UT658DUAL USB Tester