Mini monitors

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Uni-T UT658A USB TesterThe Uni-T UT658A is a compact USB tester designed to monitor the parameters of chargers, power banks, USB Type-A cables, and other power supply devices. The device measures voltage, current, energy, capacitance, equivalent circuit resistance, and D+ and D- line voltages, allowing you to quickly assess the power quality and condition of the tested accessory. It is a practical tool for service, engineering, and everyday equipment testing.Key measurements in a handy formThe UT658A model supports USB Type-A ports and 2.0 and 3.0 protocols, offering voltage measurement in the range of 4–24 V DC and current from 0.05 to 3 A DC. The device also allows monitoring of capacitance up to 99,999 mAh, energy up to 1,000 Wh, equivalent circuit resistance from 1 to 480 Ω, and D+ and D- voltages up to 3.3 V. Support for the QC 3.0 protocol enhances the tester’s utility when working with fast-charging devices.Convenient data logging and compact designThe UT658A allows you to save up to 10 data sets, with a maximum recording time of 99 h 59 min 59 s at a resolution of 1 s. Simultaneous on-screen display of key parameters facilitates daily work and speeds up result analysis. Weighing 50.6 g and measuring 93 × 45 × 13 mm, the model is significantly more compact, making it well-suited as a handy tool for quick diagnostics.Included in the set USB tester User manual Specifications Manufacturer Uni-T Model UT658A Type USB tester Input and output ports USB Type-A Data and charging protocol 2.0 / 3.0 Voltage range 4~24V DC Voltage resolution 0.01V Current range 0.05~3A DC Current resolution 0.01A Capacity 0~99999mAh Capacity resolution 1mAh Energy 0~1000Wh Circuit equivalent resistance measurement 1~480Ω USB data cable D+ voltage 0~3.3V USB data cable D- voltage 0~3.3V Data storage 10 sets Maximum recording time 99h 59min 59sec Time resolution 1s Fast charging protocol QC 3.0 Color White Weight 50.6g Dimensions 93mm x 45mm x 13mm Certifications CE, UKCA