Check out our Trutpilot Reviews! 
Dive into the world of precise USB testing with Kunkune’s FNB38 Current and Voltage Meter. Designed for enthusiasts and professionals, this USB tester offers unparalleled accuracy and versatility, ensuring you’re always on top of your charging game.
FNIRSI FNB38 Key Features:
- Multi-Interface Compatibility: Integrated with USB-A, Micro-USB, and Type-C interfaces for diverse testing needs.
- High-Definition Display: 1.44-inch TFT LCD display ensures clarity and ease of use.
- Advanced Protocol Monitoring: From QC2.0 to PD protocol triggers, the FNB38 has got you covered.
- Precision Measurement: Empowered with an external 16-bit ADC and PD protocol physical chip for accurate readings.
- Smart Data Storage: Intelligent energy capacity detection and recording for comprehensive analysis.
- One-Screen Display: All your essential data, is displayed on a single, user-friendly screen.
- Safety First: Equipped with safety measures to prevent overloading and overheating.
FNIRSI FNB38 Usage Notes:
- Power Limitations: Avoid connecting a power supply exceeding 24V to the tester.
- Input Port Guidelines: While the USB-A input port supports high-power input, the Micro-USB input port is limited to 2.5A. For high current and power, opt for the Type-C female output.
- Data Transmission: The HID-USB interface is exclusively for data transmission.
- Safety Precautions: The tester may heat up during high voltage and power usage. Handle with care to avoid burns.
Firmware Upgrade Advisory: Before upgrading the tester’s firmware, ensure you’re using the correct model-specific firmware to prevent potential errors.
