Features: 1. Small size, light weight and beautiful appearance 2. Good reliability and easy installation 3. 35mm standard DIN rail mounting, in accordance with standard DIN EN50022. 4. Single pole width (modulus 18mm) in accordance with DIN43880. The standard configuration 5+1 digital display (99999 1KWh), through the stepper motor type pulse register. 5. Standard configuration pulse output passive (polarity), select remote pulse output passive (non-polar). It is easy to contact with various AMR systems and conforms to the standards IEC 62053-31 and DIN43864. 6. Double color LED indicates the power status (green) and the energy pulse signal (red). 7. Automatically detect the flow direction and command of the load current 8. One-way measurement of single-phase two-wire active power. 9. Standard configuration S type connection, U type connection can be selected. 10. Extend the terminal cover to protect the use. Specification: Condition: 100% Brand New Model: DDM18S Voltage Specification: 220V/230V Frequency: 50/60Hz Current Specifications: 5(20)A, 5(25)A, 5(30)A, 5(32)A Display Mode: Register (5+1) display Installation Method: Rail Installation Weight: Approx. 102g / 3.6oz Package List: 1 * DDM18S Energy Meter 2 * Shell Accessories