FR FNB48S BT USB TesterThe FR FNB48S BT USB Tester is a feature-rich USB voltage and current meter with built-in Bluetooth connectivity, making it perfect for engineers, developers, and DIY testers who want remote monitoring and real-time logging.Compatible with both USB-A and USB-C ports, this tester provides accurate data for voltage, current, power, capacity, resistance, and more. Its PD and QC trigger functionality allows for precise control and testing of fast charging modes. The built-in Bluetooth allows connection to mobile apps for graphical logging and remote display.Ideal use of FR FNB48S BT USB Tester is for power banks, fast chargers, PD adapters, mobile diagnostics, and embedded USB projects.Key Features: Supports USB-A & USB-C ports Built-in Bluetooth for real-time data on mobile PD/QC trigger support (PD2.0/PD3.0/QC2.0/QC3.0) Displays Voltage, Current, Power, Energy, Resistance, Capacity, and Time 1.44" TFT Color Screen Protection alerts for over-voltage/current App support for live data graphing USB-C bidirectional current flow Technical Specifications: Specification Details Model FR FNB48S BT Display 1.44" TFT Color Screen Ports USB-A, USB-C Voltage Range 4V 30V Current Range 0A 5.1A Power Measurement Up to 150W Bluetooth Yes App connectivity for logging & display Trigger Support PD2.0, PD3.0, QC2.0, QC3.0 Capacity/Energy Yes (mAh, Ah, Wh) Resistance Measurement Yes Data Logging On-screen and via mobile app Use Case USB Charger Testing, PD Fast Charge Debugging