FORIOT 2Pcs USB Tester Power Meter Blue Red Display

Dual USB tester kit for power diagnostics

This two-piece set combines a voltmeter and ammeter that show voltage and current simultaneously on blue and red displays. It suits technicians, hobbyists and anyone who needs to verify charger output or device draw without opening a circuit. Each unit plugs inline between a USB-A source and a USB-A load for instant readings.

Sustained measurement within 4 V to 30 V

The meters maintain ±1 % accuracy across the full range while dissipating roughly 0.1 Ω line loss. Resolution stays at 0.01 V and 0.01 A during continuous use, so long charging sessions or load tests remain readable without drift. The 22 g bodies add negligible resistance to the cable run.

Compact inline form factor for bench or field

At 60 mm by 28 mm by 15 mm each tester fits between connectors without blocking adjacent ports. Male and female USB-A ends let you insert or remove the tool in seconds, and the battery-free design means it draws operating power from the circuit under test. No extra leads or adapters are required for basic voltage and current checks.