Abstract: Utility meter for monitoring, recording and communicating commodity consumption data at a customer site, comprising: a meter unit (9, 10) for recording said consumption data and generating a meter output signal being representative of said consumption data; a processor unit (4, 17) for processing said meter output data and for providing at least one evaluation value; a memory unit (6) for storing said meter output data and/or said at least one evaluation value; a communications unit (7, 8, 15) for transmitting said evaluation value to a utility supplier and for receiving evaluation parameters from said utility supplier, characterized by a power supply converter unit (3, 12) for converting external electric power into internal electric power for the supply of said meter unit, processor unit, memory unit and communications unit, which power supply converter unit is self-adjusting to an external electric power input voltage.