FNIRSI FNAC-28 2-in-1 Type-C USB Tester & Voltmeter

The FNIRSI FNAC-28 is a compact 2-in-1 Type-C power meter and digital voltmeter tailored for FPV bench diagnostics and field maintenance. Passing power and data straight through its Type-C ports, this inline tester provides a live readout of voltage, current, total power, and accumulated capacity. It serves as a practical diagnostic tool for drone builders to safely monitor the current draw of a newly soldered flight controller and spot 5V rail shorts before they cause damage. In the field, it allows pilots to verify the true output of fast-charging power banks or track the charge cycles of USB-powered radios and goggle batteries.

Key features

• Real-time inline monitoring of voltage, current, and total wattage via USB-C passthrough.

• Tracks accumulated capacity to accurately test power bank charge and discharge health.

• Instantly identifies abnormal current draw on flight controllers, HD VTX units, and action cameras.

• Compact footprint with a highly legible digital display for rapid bench diagnostics without a standalone multimeter.