Feature: 1. Rail type mounting,more fast and quick mounting. 2. LCD 5+1 display is clear and convenient to read. 3. Small size ,can be mounted in any positions. 4. Low energy consumption,up to 2W and 10VA energy consumption. 5. Made of fine metal and ABS material of good quality. Specification: Item Type:3 Phase 4Wire Watt Hour Meter Material:Metal+ABS Reference Voltage: 3 X 230/400 (V) Reference Current: 3 X 5 (100) A Rated Frequency: 50Hz / 60Hz Constant Pulse: 400imp / KWh Display: LCD 5+ 1 Power Consumption: ≤ 2W, 10VA Model: DDS576 Accuracy Level: 1 Maximum Working Current: 100A Measuring Energy Range: 0.0-99999.0kwh Power Supply: AC Size:125 x 88 x 73mm / 4.92 x 3.46 x 2.87in Output Voltage: 380v AC Rated Voltage: 380v AC Phase Number: Three Phase .w-e-text table td, .w-e-text table th{border: .5pt solid #000;};.w-e-text table{border: 1px solid #000 !important;}.w-e-text table td,.w-e-text table th,;.w-e-text table, Package List: 1 x Meter 1 x Users Manual Rail type mounting,more fast and quick mounting. LCD 5+1 display is clear and convenient to read. Small size ,can be mounted in any positions. Low energy consumption,up to 2W and 10VA energy consumption. Made of fine metal and ABS material of good quality.