1、DDS1891 is a DIN rail single‑phase two‑wire active electronic energy meter, which has stable adn professional performance. 2、Adopt many advanced R&D technologies, such as microelectronics technology, professional large‑scale integrated circuits (integrated circuits), digital sampling and processing technologies. 3、It can directly and accurately measure the active power consumption of the load in a single‑phase AC network with a rated frequency of 50Hz. 4、The technical performance is in full compliance with the international standard IEC62053‑21 for class 1 single‑phase active energy meters. 5、Features excellent long‑term reliability, small size, light weight, perfect appearance, and easy installation. Condition: 100% Brand New Item Type: Din Rail Energy Meter Material: Copper + Plastic Color: As picture shown Voltage: 230V Frequency: 50Hz Current: 5(32)A Starting Current: 0.02A Insulation Performance: AC voltage 4kv for 1 minute, 1.2 / 50us waveform pulse voltage 6kv Functions and Features: 1. 35mm standard DIN rail installation 2. Single pole width (modulus 18mm) 3. Standard configuration 5 + 1 LCD display (99999.1kWh). 4. Standard configuration of passive pulse output (polarity), long-distance passive pulse output (non-polarity) can be selected, which is convenient for contact with various AMR systems. 5. When the meter starts measuring, the pulse indicator flashes. 6. Automatically detect the flow direction of the load current. (When HELP1 is displayed on the LCD, it indicates the reverse flow of load current). 7. One-way measurement of single-phase two-wire active energy, independent of the direction of load current 8. Standard configuration S type connection, U type connection can be selected. 9. Extend the terminal cover to protect the safety of use. 1 x Din Rail Energy Meter 2 x Bracket 1 x Manual