The FNIRSI FNAC28 2In1 Type C USB Prober 6.5A Digital Voltmeter is a compact, high-precision tester built for USB-C power delivery enthusiasts, electronics hobbyists, and professionals who need real-time insights into charging performance. Measuring 73x36x12 mm, it fits easily in your pocket while delivering a clear, 1.06-inch color display that shows voltage, current, and power readings at a glance. With a wide monitoring range (4–24V and up to 6.5A), this device covers most USB-C PD and fast-charging profiles, helping you verify adapters, cables, and devices quickly and accurately. It supports a broad set of charging protocols (QC2.0/3.0, SVOOC, VOOC, and more) and is upgradeable through firmware to stay current with evolving standards. Features like brightness adjustment, standby time setting, and both DASH and Soft DASH cables support make it versatile for any testing scenario. Language support includes CN/EN for easy use in diverse workflows.

Benefits & tips

Quickly verify USB-C power adapters and cables: confirm voltage, current, and power to ensure safe, efficient charging.
Diagnose charging compatibility: check support for QC2.0/3.0, SVOOC, VOOC, and other fast-charging protocols to identify mismatches or underperforming components.
Carry and tune with ease: use the handy 1.06" color screen and brightness adjustment in various environments, and keep firmware up to date for the latest features.

Product specifications

Brand: FNIRSIB
Model: FNAC28
Monitored voltage: 4–24 V
Monitored current: 0–6.5 A
Monitored power: 0–156 W
Screen: 1.06-inch color display
Size: 73 × 36 × 12 mm
Firmware upgrade: Supported
Brightness adjustment: Supported
Dash cable support: Yes (DASH Cable and Soft DASH Cable supported)
Charging protocols supported: QC2.0 (5V/9V/12V/20V), QC3.0 (3.4–20V), SVOOC 1.0/2.0, VOOC/WARP up to 20V
Language support: CN/EN
Origin: Mainland China

Package includes:

FNAC28 USB Prober and Digital Voltmeter unit

Warnings / Reminders

Operate within the specified voltage (4–24 V) and current (0–6.5 A) ranges to prevent damage.
Avoid exposure to water and high humidity; use dry hands when handling the device.
Firmware updates should be performed with care to ensure device compatibility and data integrity.

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Please note: All electronic and mechanical equipment, devices and machines sold to EU countries are CE certified and carry a two year warranty.