WiTenergy is a Bluetooth 4.0 connected Energy Meter Socket. It canseamlessly transmit your energy data: Voltage, Current, Wattage,Power Factor… to your Smartphone. Besides, your smartphone can beyour controller for the Socket. Features Reading data: Voltage,Current, Wattage, Power Factor, Timer, Scheduler, Graphpresentation Support multiple energy meter measurement at real timeRequirement Android 4.3 or later Bluetooth 4.0 Compatibility TheSmartphone should be "Bluetooth Smart Ready" device.