Chint DTSU666-H smart power sensor for electricity measurement. The device is new and unused. Includes three 100A current transformers, a 5m RS485 cable, and the quick guide. Technical specifications: 230/400V, 100A/40mA, 50/60Hz, accuracy class 1. Designed for 3P4W wiring. All components are in original condition. See images for further technical details and included accessories.