... Protection with CE &ROHS Digital Wireless Power Meter, power meter,energy power meterMulti-function: with voltage, current, power, power factor and power measurements, as well as ... Communication distance: "50 meters (open space);14. Power frequency withstand voltage: AC220V power source, the power / input / output between: ≥ AC2kV/min. ... weight: 22.5kg Wireless Energy Monitor,JNX-2000A power meter