"1. 35mm DIN-Rail?mounting meet a criterion of DIN EN-50022 2. High-accuracy measurement of active power, active power level 1 3.LCD 6+1 display (999999.9kWh), backlight display 4. Passive pulse output, meet a criterion of DIN43864 5.LED indicates pulse output 6. Can be set by button 7. One way RS485 communication interface, modbus communication protocol"