Gardner Bender USB Multimeter

Gardner Bender's GUSB-3450 USB Multimeter is used to confirm USB port voltage and current and check chargers, cables and USB ports. The tester features a high-impact housing and a pocket clip. Measure current draw, measure performance of solar USB chargers and test for proper wiring and polarity. The easy-to-understand display alternates between volts and amps. Features a one year warranty.