The second-generation UT658 series USB testers can inspect USBchargers, portable power sources, USB type A and C cables andother electronic charging devices. UT658 measures output voltage,current, energy, capacity, circuit equivalent resistance, D+ andD- voltages of USB data cables. This series is designed to beprecise, reliable, stable, and portable. They are great tools forapplications such as manufacturing verification, engineeringtesting, and DIYers. Specifications: Input & Output ports (Type A) √ Data/charging protocol 2.0/3.0 Voltage range 4~24VDC, resolution: 0.01V √ Current range (Type-A) 0.05~3ADC, resolution: 0.01A √ Capacity 0~99999mAh, resolution: 1mAh √ Energy 0~1000Wh √ Circuit equivalent resistance measurement 1~480Ω √ USB data cable voltage (D+, D-) 0~3.3V √ Data storage 10 sets √ Maximum recording time 99h, 59min, 59sec; resolution: 1s √ Fast charge protocol (Type-A) QC 3.0 fast charge protocol √ General Characteristics Product color: White Product net weight: 50.6g Package Includes: 1 x UNI T UT658A USB Tester