High adaptability: Widely compatible with various Rogowski coils, with customizable range; supports external open-type Rogowski coils/voltage-type CTs for wire-free testing. Functional configuration: No storage function; supports 6 rates (manual setting/RTC segmentation); one relay output, one digital input; 4 current measurement channels. Optimized display: Adjustable backlight brightness and time. System compatibility: Supports three-phase three-wire/three-phase four-wire systems, capable of measuring multiple electrical parameters in phases A/B/C; compatible with configuration systems for real-time data upload. Stable accuracy: Minimum measurement current 2A, accuracy 0.5%.