A “wall-embedded” power-line-communication (PLC) enabled device connecting with the home network backbone through the PLC technology is disclosed. The wall-embedded PLC enabled device includes at least a system module, a front panel, and a holder. With flexible, modular architecture, the device can easily optionally integrate required functions, such as sensors, actuators and so on, or additional heterogeneous communication interfaces, to extend the service coverage, to support the specific smart-house services, and other uses.