KEWEISI Multi-function Type-C USB-C Tester Charger Detector Digital Voltmeter Ammeter Voltage Meters Description: 1. Type: digital voltage measuring instrument 2. Voltage: 4-30V 3. Current: 0-5.1A 4. Power: 0-155W 5. Internal temperature: 0-80 degrees 6. Timing: 0-99 hours 7. Grouping: Groups 0-9 8. Ambient temperature: 50 (degree C) 9. Size: 5.3x2.6 cm Features: 1. Real-time monitoring, safe and reliable, timekeeping, sleeping at night is no longer overheated, voltage monitoring does not damage the battery, both front and back can be inserted 2. Quickly double-click the button to rotate the display for easy viewing. 3. Safety plugs can be used as long as they are USB-CType-C interfaces, such as notebooks, various mobile phone charging plugs, desktop computers, etc. 4. Rejects oxidation and rust, suitable for a variety of environments, aluminum alloy joints, precision built. Effectively avoid oxidation and rust 5. Strong interface, sensitive contact, aluminum alloy material, built-in aluminum alloy plate, anti-friction and anti-rust for many times 6. Clear screen. The charging speed is clear at a glance. With the USB monitor, the status when charging is clear and the numbers are clearly visible.