Ecm Industries GUSB-3450 Usb Multimeter Tester

Product Description

The ECM Industries GUSB-3450 is a compact USB multimeter tester designed to confirm voltage and current readings at USB ports, chargers, and cables. The unit features a high-impact housing and an integrated pocket clip for field portability. Its alternating display cycles between volts and amps, giving technicians a quick read on port performance without requiring a full bench setup. Electricians and low-voltage installers use this tool to verify wiring polarity, assess solar USB charger output, and diagnose charging circuit issues. A 1-year manufacturer warranty is included.

This tester is suited for residential and light commercial electrical work where USB power verification is part of the service call. It is commonly used when installing or inspecting USB outlet receptacles, vehicle charging ports, solar panel charging accessories, and portable power stations. The device is compact enough to carry in a tool pouch and provides an immediate pass-or-fail read on USB port integrity without additional test leads or setup.

Key Features

• Alternating display shows both voltage and current draw in sequence for fast diagnostics
• High-impact housing provides durability in field conditions
• Pocket clip included for hands-free portability on the job
• Tests wiring polarity to confirm proper USB port installation
• Compatible with solar USB charger output testing
• 1-year manufacturer warranty included

Compatibility

Designed for use with standard USB ports, USB chargers, and USB cables in residential, commercial, and mobile applications.

Installation Notes

This is a diagnostic tool, not a hardwired component — no installation is required. Plug the unit directly into a USB port or charger to begin testing. Electricians should follow applicable NEC guidelines when servicing USB outlet receptacles or charging circuits. Ensure the circuit is live and the device under test is powered before taking readings.