Plug-and-Play Pocket Size All-in-One Screen Universal Ports USB Digital Tester
1 × USB Digital Tester (USB-A + USB-C). 🔸Safety Alarms – buzzer + screen flash when V > 36 V or A > 8 A; protects devices from unsafe power. 🔸Display On/Off – short-press key to dim screen at night while continuing to log data.