Functioned as being power meter,voltage meter, energy meter, air-conditioner or fridge monitor,helper; CE and RoHS approved. ... bill if you adopt simple and efficient energyMulti-plug Socket with power meterMeasurement Range: 1. Voltage: 90~150V or 160~280V 2. Power ... : ≥ 2 per second Approvals: CE, RoHSOEM and ODM: available multi-plug Socket with Power Meter