1、With excellent long‑term reliability, small size, light weight and easy installation, etc. 2、Can accurately and directly measure the 50Hz active energy of single‑phase AC grid 3、Adopt microelectronics technology, and large‑scale integrated circuits, and adopt advanced digital technology and SMT technology. 4、One‑way measurement of single‑phase two‑wire active energy consumption, the direction of load current flow is irrelevant. 5、35mm standard DIN rail installation, in line with standard DIN EN50022. Item Type: Single Phase Meter Rated Voltage: 230V Rated Current: 5 (80) A Frequency: 50Hz Pulse Constant: 1000imp/kwh Product Description: DDS1891 single-phase electronic DIN track active energy meter is a new type of single-phase two-wire active energy meter, which uses microelectronics technology, and introduces large-scale integrated circuits, and uses advanced digital technology and SMT technology. It has completely independent intellectual property rights and minimum size. The meter fully complies with the relevant technical requirements of the class 1 single-phase active energy meter stipulated in the international standard IEC62053-21. It can accurately and directly measure the 50Hz active energy of the single-phase AC power grid, and can pass the stepper motor type pulse register. It has the characteristics of good reliability, small size, light weight, beautiful appearance and convenient installation. Features: 1.35mm standard DIN rail installation, in line with standard DIN EN50022. 2. Bipolar width (modulus 17.5mm), in line with standard DIN43880. 3. Standard configuration 5 + 1 LCD display (99999.1kWh). 5. When the meter starts measuring, the pulse indicator flashes. 6. One-way measurement of single-phase two-wire active energy consumption. The direction in which the load current flows does not matter. Comply with IEC62053-21 standard 7. Direct connection operation, up and down, input and output. 1 x Single Phase Meter 1 x User Manual 4 x Plastic Ring