Features: 35mm standard DIN rail installation, complying with standard DIN EN50022. 6 pole width, complying with DIN43880 standard. 8-digit display, 6+2 digits display (99999.1 kWh). Standard configuration passive power pulse output (polarity), easy to connect with various AMR systems, in accordance with IEC 62053-21 and DIN 43864 standards Two LED with different colors, Green light shows the status of power supply, Red light shows the pulse signal. Automatically detects and indicates the direction of load current. (If the Red LED is on and the Green LED is off, that means the direction is reversed) Measures One-phase Two-wire active energy consumption in a single direction. It has nothing to do with the direction of load current. Complying with standard IEC 62053-21. Standard configuration U - type wiring, short protection cover, reduce installation space and facilitate centralized installation. Specifications: Voltage: 220V Current: 10 (40) A Accuracy class: 1.0 Insulation performance: AC 2kv for 1min Impulse voltage withstand: 6KV Size: 10 x 7.5 cm / 3.94 x 2.95in Weight: 352g Package includes: 1 x DIN-Rail Energy Meter Meter 1、35mm standard DIN rail installation, complying with standard DIN EN50022. 2、6 pole width, complying with DIN43880 standard. 3、8-digit display, 6+2 digits display (99999.1 kWh). 4、Standard configuration passive power pulse output (polarity), easy to connect with various AMR systems, in accordance with IEC 62053-21 and DIN 43864 standards 5、Measures One-phase Two-wire active energy consumption in a single direction. It has nothing to do with the direction of load current. Complying with standard IEC 62053-21.