The Joy-it JT-UM120 USB Multimeter is a compact, in-line tester designed for electronics enthusiasts who want clear visibility into USB power. It’s ideal for developers, tinkerers, and anyone who needs quick, reliable readings from USB ports and chargers.

Key Features & Design

• In-line USB power monitoring: Place the JT-UM120 between a USB power source and your device to view readings as you test cables, chargers, and gadgets.
• Compact, portable design: Lightweight and easy to carry for on-the-go testing at home, in the workshop, or in the lab.
• Simple, user-friendly operation: Quick setup with intuitive readings that help you evaluate USB power delivery without guesswork.
• Broad compatibility: Compatible with standard USB power sources and devices, making it a versatile tool for everyday electronics testing.

Performance / Benefits

The JT-UM120 helps you verify charging behavior, identify faulty cables, adapters, or devices, and troubleshoot power-related issues. By providing real-time visibility into USB voltage and current, you can ensure your projects charge safely and operate within expected power limits. It’s an indispensable companion for hobbyists, engineers, and technicians working with USB-powered equipment.