Devices, systems and methods for coupling sensors to intelligent electronic devices (IED's), e.g., an electrical power meter, via various communication media are provided. The present disclosure provides a mechanism for coupling an IED to another desired device, e.g., a current sensor, using modular connectors (e.g., a RJ-45 connector) and fiber-optic cables. The present disclosure also provides for coupling devices using modular connectors via wired or wireless connectivity.