... Wireless Power Meter, power meter,energy power meterMulti-function: with voltage, current, power, power factor and power measurements, as well as ... the timing, billing, alarm conditions, time of dollars, WIRELESS USB conect to computer display1. Voltage: 80 ~ 280 V2. Power ... "50 meters (open space);14. Power frequency withstand voltage: AC220V power source, the power / input / output between: ...