Features: 1. Boasts excellent long-term reliability, compact size, lightweight design, and easy installation. 2. Accurately and directly measures 50Hz active energy in single-phase AC power grids. 3. Utilizes microelectronics technology, large-scale integrated circuits, and advanced digital and SMT technologies. 4. Provides one-way measurement of single-phase two-wire active energy consumption, regardless of load current flow direction. 5. Features 35mm standard DIN rail mounting, compliant with DIN EN50022 standard. Specification: Item Type: Single Phase Electric Meter Rated Voltage: 230V Rated Current: 5 (80) A Frequency: 50Hz Pulse Constant: 1000imp/kwh Insulation Performance: Power frequency AC voltage 2kv for 1 minute, impulse voltage 6kv Product Description: The DDS1891 single-phase electronic DIN rail active energy meter is a new type of single-phase two-wire active energy meter. It incorporates microelectronics technology, large-scale integrated circuits, and advanced digital and SMT technologies. This meter boasts fully independent intellectual property rights and a minimal size. The meter fully complies with the relevant technical requirements for Class 1 single-phase active energy meters as specified in the international standard IEC62053-21. It accurately and directly measures 50Hz active energy in single-phase AC power grids and can pass through a stepper motor type pulse register. It offers good reliability, small size, lightweight, beautiful appearance, and convenient installation. Features: 1. 35mm standard DIN rail mounting, compliant with DIN EN50022. 2. Bipolar width (module 17.5mm), compliant with DIN43880 standard. 3. Standard configuration 5 + 1 LCD display (99999.1kWh). 4. Displays: Power, voltage, current, frequency, power factor, active power. 5. The pulse indicator flashes when the meter begins measuring. 6. One-way measurement of single-phase two-wire active energy consumption. The direction of load current flow does not matter. Complies with IEC62053-21 standard. 7. Direct connection, up and down, in and out. Package List: 1 x Single Phase Electric Meter 1 x User Manual 4 x Plastic Ring