Features Small size, light weight and beautiful appearanc,Good reliability and easy installation,35mm standard DIN rail mounting, in accordance with standard DIN EN-50022. Single pole width (modulus 18mm) in accordance with DIN43880,The standard configuration 5+1 LCD display (99999.1KWh) Standard configuration pulse output passive, select remote pulse output passive (non-pol-ar). It is easy to contact with various AMR systems and conforms to the standards IEC 62053-31 and DIN43864. Double color LED indicates the power status (green) and the energy pulse signal (red),Automatically detect the flow direction and command of the load current,Easy to use, Suitable for novice or professional use. One-way measurement of single-phase two-wire active power,Direct S type connection,Extend the terminal cover to protect the use. 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