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 (18mm module) in accordance with DIN43880. 5. Standard configuration 5+1 LCD display (99999.1KWh) 6. Standard configuration pulse output passive (polarity), select remote pulse output passive (non-polar). It is easy to contact various AMR systems and complies with IEC 62053-31 and DIN43864 standards. 7. Dual-color LED indicates power status (green) and energy pulse signal (red). 8. Automatically detects the direction of flow 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 usage. Specification:Condition: 100% Brand New Model: DDM18SC Accuracy: Level 1 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 (5+1) Display Installation Method: Rail Installation Weight: Approx. 94g / 3.3oz Package List:1 * DDM18SC Energy Meter 2 * Shell Accessories