DDS1531 DIN rail single phase two wire active electronic energy meter. It adopts many advanced technologies of research and development, like microelectronic-techniques, specialized large-scale IC (integrated circuit), digital sampling and processing technology, SMT technique, and so on. The technical performances completely conform to International Standards IEC 62053-21 for Class 1 single phase active energy meter. It can directly and accurately measure the load active energy consumption in the single phase AC networks of rated frequency 50Hz or 60Hz. LEM012SD has features with excellent long-term reliability, small volume, light weight, perfect appearance, easy installation, etc.

√ Available as 35mm DIN standard rail mounted, conforming to Standards DIN EN 50022.
√ Single pole width (modulus 17.5mm), complying with Standards DIN43880.
√ Standard configuration 7+1 digits display (9999999.1kWh) without backlight LCD. May select 7+1 digits display (999999.1kWh) by white backlight LCD.
√ Standard configuration pulse output passive (polarity)，May select distant pulse output passive (nonpolarity). And contact with all kind of AMR system conveniently，complying with standard IEC 62053-31 and DIN 43864.
√ Bicolor LED instructions power supply state (green) and signal of energy impulse (red).
√ Automatic detection the direction of the flow of load current. And Instructions on LED (when display HELP 1 on LCD, that means the reverse of the flow of load current).
√ Single direction measurement single phase two wire active energy consumption. It is nothing with direction of the flow of load current. Complying with standard IEC 62053-21.
√ Directly type S connection.
√ Extension terminals cover, in order to protect to use safety.