A low voltage power receptacle assembly is provided for use in a modular electrical system. The pump diode produces light at a first wavelength. The first member has a size substantially smaller than the diameter of said flow path and a first plurality of openings therethrough. A first electronic switch is turned on, a second electronic switch is turned off, and a power supply state pin of the power supply circuit outputs a high level power supply state signal to a power state input pin of a main chip after the power supply circuit outputs the standard voltage. The spout has first and second portions.