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. 5. The standard configuration 5+1 backlight LCD display (99999.1KWh) 6. 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. 7. Double color LED indicates the power status (green) and the energy pulse signal (red). 8. Automatically detect the flow direction and command of the load current 9. One-way measurement of single-phase two-wire active power. 10. Direct S type connection 11. Extend the terminal cover to protect the use. Specification: Condition: 100% Brand New Model: DDM18L Accuracy Level: 1.0 Reference Voltage: 220V/230V, 50/60Hz Current Specifications: 5(20)A, 5(25)A, 5(30)A, 5(32)A Starting Current: 0.02A Insulation Performance: AC voltage 4KV, 1 minute, 1.2/50us waveform impulse voltage 6KV Display Mode: LCD with backlight (5+1) display Installation Method: Rail Installation Weight: Approx. 96g / 3.4oz Package List: 1 * DDM18L Energy Meter 2 * Shell Accessories 1Small size, light weight and beautiful appearance 2Good reliability and easy installation 335mm standard DIN rail mounting, in accordance with standard DIN EN50022. 4Single pole width (modulus 18mm) in accordance with DIN43880. 5The standard configuration 5+1 backlight LCD display (99999.1KWh)