Power-Z KM001C is USB Type-C tester from ChargerLAB. Nice and slim. With OLED display. With good PC Software. Have similar features to KM001 and same PC Software.
The main issue of Power-Z devices is no good English translation for both firmware and PC Software, But anyway it still a useful tool. And PC Software is actually best in class. Software updates are available at
PC Software: Power-Z-1.3.9.zip (can be used for both KM001 and KM001C)
Price: ~45$ (AliExpress)