Enocean STM550U

Modulation is the process of converting data into radio waves by adding information to an electronic or optical carrier signal. A carrier signal is one with a steady waveform -- constant height, or amplitude, and frequency.

Supply current refers to the input current to an LDO regulator at no load, which flows inside the IC in order to operate. The power consumption of an LDO regulator can be calculated as. (Input Voltage) x (Consumption current of IC itself) + (Input Voltage - Output Voltage) x (Load current)