The invention relates to a method and system for analyzing an electronic communication, more particularly, to analyzing telephonic communications between customers and a contact center to determine and display the most relevant communications to an organization or business. Since the plurality of switch circuits are mutually independent as sub-switches of the switch unit, the entire switch unit does not become a complete group switch. A resistor means detects a current flowing through the power elements. The first page of memory is monitored for errors. Moreover, identification information for identifying the external volume is collected. The tool cover supports and aligns an inductor element of a stator with magnets of a rotor within the tool housing.