Patent ID: 7477998

Claim:
An option device for coupling with a meter device that is configured for measuring parameters of energy, the option device comprising: at least one component for providing an option function; at least one storage device for storing initialization data useable by the meter device for configuring the meter device to operate with the option device; at least one connector for coupling with the meter device for exchanging data with the meter device along at least one data path, the exchanged data including the initialization data; and at least one processor for at least one of processing data exchanged between the meter device and the option device and communicating with the at least one component; wherein upon coupling the at least one connector with the meter device, the meter device operates with the option device for adding the option function to existing functionality of the meter device, wherein the meter device is of the type configured for measuring parameters of energy, wherein the initialization data includes at least one of a gain factor and an offset factor corresponding to the gain of the option device useable by the meter device for calibrating the option device to operate with the meter device for adding the option function to the existing functionality of the meter device.