Product description: USB-Multimeter - voltage, current and power meter from USB port - Joy-IT UM120
UM120 is a versatile and compact USB digital multimeter , ideal for diagnostics and analysis of power in USB ports. With advanced measurement functions and support for multiple charging protocols, this device allows you to track voltage, current, power, energy and wire resistance values with high precision. UM120 is equipped with a 2-inch color IPS display with automatic rotation and a micro USB interface for communication with a computer. It is an indispensable tool for electronics engineers, equipment testers and technology enthusiasts.

The UM120 is a versatile and compact USB digital multimeter, ideal for diagnostics and power analysis on USB ports.
Special Features
- Wide USB measurement range : voltage from 4 V to 28 V, current up to 7 A, power up to 120 W
- 2" IPS color display : 320 x 240 pixel resolution, automatic screen rotation
- High precision measurements : resolution up to 0.00001 V / A / W, accuracy ± 0.02% to 0.05%
- Fast charging protocol support : PD3.0, QC3.0, Huawei SCP, VOOC and others
- PC software : real-time data analysis and results export
- Measuring wire resistance and ripple : additional functions for advanced users
- Support for various USB ports : USB Type-A, USB Type-C, microUSB (input and output)
- Compact dimensions : only 82 x 42 x 13 mm - ideal for mobile use
Application in practice
The UM120 is the perfect diagnostic tool for anyone working with USB devices. It is perfect for testing charging smartphones, tablets, power banks and power supplies. With the ability to measure fast charging protocols, service technicians and electronics manufacturers gain full control over the quality of power supply. The wire resistance measurement function allows you to verify the quality of USB cables, which is important when working with devices that require high power.

It is an indispensable tool for electronics engineers, equipment testers and technology enthusiasts.
Technical specification of the meter
- Voltage range: 4V to 28V
- Current range: 0 A to 7 A
- Power range: 0 W to 120 W
- Voltage accuracy: ±0.02% + 2 digits
- Current and power accuracy: ±0.05% + 2 digits
- Measurement resolution: 0.00001 V / A / W
- Capacity: up to 9999.99 Ah / Wh
- Wire resistance: up to 9999.99 Ω (accuracy ± 0.05%)
- Charging protocols: QC2.0, QC3.0, Huawei SCP / FCP, PD2.0 / 3.0, VOOC / WARP, Apple 2.4A, and others
- Ports: USB Type-A, USB Type-C, microUSB (input and output), microUSB (PC interface)
- Display: IPS 2'', 320 x 240 px, auto rotation
- Menu languages: German, English
- Dimensions: 82 x 42 x 13 mm