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FNIRSI FNB58 BT USB Port Tester with Bluetooth is an advanced diagnostic tool designed for monitoring USB power delivery, charging performance, and cable quality. It supports a wide range of fast-charging protocols, including PD 3.1, PPS, QC, SCP, AFC, and SuperVOOC, making it suitable for testing modern chargers and mobile devices. The high-resolution display provides real-time measurements of voltage, current, power, and charging behavior with exceptional precision. Bluetooth connectivity, offline data logging, and cable diagnostics make the FNB58 BT an ideal solution for technicians, electronics enthusiasts, and users who want detailed insight into charging performance.

The FNIRSI FNB48P BT USB Port Tester is a professional diagnostic tool designed for detailed analysis of USB charging performance, power delivery protocols, and cable quality. Supporting USB-A, USB-C, and Micro USB connections, it provides accurate real-time monitoring of voltage, current, power, and charging efficiency. Bluetooth connectivity enables convenient data logging and analysis through a compatible app, while advanced protocol detection ensures compatibility testing across a wide range of charging technologies. Its durable metal housing, high-precision measurements, and intelligent cable diagnostics make it suitable for technicians, electronics enthusiasts, and advanced troubleshooting applications.

The FNIRSI FNB58 USB Port Tester is a professional diagnostic tool designed for measuring and analyzing USB charging performance. Featuring a high-resolution 2-inch display, Bluetooth connectivity, and support for major fast-charging protocols, it provides detailed real-time monitoring of voltage, current, power, and charging behavior. The tester helps verify charger quality, evaluate cable performance, detect charging issues, and monitor charging efficiency. With support for PD 3.1, PPS, QC, AFC, SCP, and many other standards, it is suitable for technicians, electronics enthusiasts, and anyone who wants accurate insight into USB power delivery systems.