... CE, RoHS, FCC approvals High Accuracy Single Phase Digital Display Smart Energy Meter, AU Plug Functions:1. Measure real-time voltage of ... the operation time of appliances.Parameters: Product Name energy meter, power meter, volt meter, watt meter, kWh meter Brand Name POLINOVEL Model Number SPM-002A (WF ... now ~ ~!More Pictures: High Accuracy Single Phase Digital Display Smart Energy Meter, AU Plug