Features: 1Voltage Current Monitor: Able to test 3 phase current and voltage, also enables programmable measurement, display, alarm and other functions. 2Practical Uses: Can be widely applied to substation, automation, buildings, machinery and equipment, energy measurement and so on. 3High in Safety: Flame retardant ABS material ensures higher safety, meanwhile the safety back cover will improve the wiring safety. 4Better Designs: Silicone buttons together with clear digital display makes the whole operation and setting very easy and time saving. 5Easy to Install: Comes with a light weight and a compact size as well, the convenient installation can be quickly completed in minutes. Item Type: Voltage Current Meter Material: ABS, silicone. Power Supply Voltage: AC220V Accuracy: Grade 0.5 Wiring: 3 phase 3 wire, 3 phase 4 wire. Package Included: 1 x Voltage&nbspCurrent Meter