Features 1、4 Button Design: The voltage meter has a 4 button design, which makes the instrument easy to use and flexible. 2、Wiring Method: This 3 phase voltage meter can be three phase three wire, three phase four wire, very convenient to wire. 3、Realtime Reading: The high brightness LCD digital display can show the three phase voltage value in realtime. 4、Flame Retardant: The 3 phase voltage meter can be flame retardant and sturdy with high accuracy and with great stability. 5、ABS Material Housing: Our three phase meter is made of ABS material with exquisite craftsmanship, which can achieve long term use. Specification Item Type: 3 Phase Intelligent Digital Voltage Meter Material: ABS Color: Black Specification: AC400V Accuracy: 0.5 grade Power Supply: AC220V Wiring: 3 phase 3 wire, 3 phase 4 wire Use: Widely used in substation automation, power distribution automation, intelligent buildings, machinery and equipment, etc. Package List 1 x 3 Phase Intelligent Digital Voltmeter