Features Good Voltmeter: Comes with AC 400V wide measurement range, the 3 phase voltmeter can be used to test 3 phase voltage. Easy Operation: Digital display enables a clear viewing on the data, which has high accuracy to simplify the working. Extensive Work: Can be widely applied to automation, substation, power distribution, electric energy measurement, etc. Simple to Install: Supports 3 wire and 4 wire wiring, the installation is very easy with light weight and small size. Better Designs: Adopting flame retardant ABS casing, premium terminals, protective back cover, and silicone buttons. Specification: Item Type: 3 Phase Voltmeter Product Model: YG194U 3XY Product Colour: White Product Material: Flame retardant ABS material, silicone. Voltage Range: AC400V Power Input: AC220V Accuracy: ±0.5% Wiring: 3 phase 3 wire or 4 wire.  Package List:1 x 3 Phase Voltmeter Package List 1 x 3 Phase Voltmeter