Features Small size, light weight and beautiful appearance.Double color LED indicates the power status (green) and the energy pulse signal (red). Good reliability and easy installation.Automatically detect the flow direction and command of the load current.Direct S type connection. 35mm standard DIN rail mounting, in accordance with standard DIN EN50022.One-way measurement of single-phase two-wire active power. Single pole width (modulus 18mm) in accordance with DIN43880.The standard configuration 5+1 LCD display (99999.1KWh).Extend the terminal cover to protect the use. 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. 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 Package List