feature: 1. The USB Type C tester has over voltage protection, over current protection, under voltage protection, low power protection and alarm system. The upgraded USB Type-C tester can detect security and protect the device from damage as much as possible. If the output data is suddenly turned off, the output and alarm will be automatically turned off. 2. Check the battery capacity, charging speed and quality of the phone charging cable. It can also be used to display the maximum current of wireless charger, test mobile power capacity and performance, and support automatic data backup function after power failure. 3. It adopts high-definition color LCD screen, and the display mode can be switched by pressing the button. With the new interface parameters, it supports OTG function and monitors device data supported by USB or USB-C such as voltage, current, capacity, wattage, power, l load impedance, D+/D- voltage, etc. Package includes: 1 x USB Tester Type: Digital Voltage Meter Model: PD current meter Measurement range: current voltage (V) Input voltage: 12 (V) Output voltage: 12 (V) Ambient temperature: 37 () Voltage measurement error: 0.05