Abstract: An expandable combination electric meter comprises a first electric meter and a second electric meter. The first electric meter includes a processing unit, a first electricity measuring unit, a power supply unit and an expansion connecting unit. The processing unit is coupled with the first electricity measuring unit, the power supply unit and the expansion connecting unit. The power supply unit outputs a working power to the processing unit, the first electricity measuring unit, and the expansion connecting unit. The second electric meter is connected with the first electric meter through the expansion connecting unit. The working power is transmitted to the second electric meter through the expansion connecting unit for enabling the second electric meter.

Abstract: An expandable combination electric meter comprises a first electric meter and a second electric meter. The first electric meter includes a processing unit, a first electricity measuring unit, a power supply unit and an expansion connecting unit. The processing unit is coupled with the first electricity measuring unit, the power supply unit and the expansion connecting unit. The power supply unit outputs a working power to the processing unit, the first electricity measuring unit, and the expansion connecting unit. The second electric meter is connected with the first electric meter through the expansion connection unit. The working power is transmitted to the second electric meter through the expansion connection unit for enabling the second electric meter.

Abstract: A portable energy management device, disposed between a power outlet and an appliance load when being used, includes a transmission module, a micro processing unit, a schedule module, and a power control circuit. The transmission module communicates with a remote control device by receiving or sending a wireless signal or a cable signal, through which schedule commands are transmitted. The micro processing unit performs analysis and identification of the appliance load, and information related to the appliance load is sent to the remote control device through the transmission module. The schedule module executed by the micro-processing unit stores and runs the schedule commands. The power control circuit is controlled by schedule commands to determine whether power should be supplied.

Abstract: A portable energy management device, disposed between a power outlet and an appliance load when being used, includes a transmission module, a micro processing unit, a schedule module, and a power control circuit. The transmission module communicates with a remote control device by receiving or sending a wireless signal or a cable signal, through which schedule commands are transmitted. The micro processing unit performs analysis and identification of the appliance load, and information related to the appliance load is sent to the remote control device through the transmission module. The schedule module executed by the micro-processing unit stores and runs the schedule commands. The power control circuit is controlled by schedule commands to determine whether power should be supplied.