An integrated temperature sensor provides an output current proportional to temperature rising from a zero value at a selectable reference temperature. The method comprises receiving facsimile data corresponding to facsimile of a plurality of checks, constructing digitized images of the checks as a function of the facsimile data, gathering check data from each of the digitized images, and processing the check data according to a check processing procedure to settle transactions referenced by each of the checks. Various embodiments of this socket contact may be used with power bar connectors, side terminal connectors or pin connectors. The interactive units control the operations of different devices within the selected location that consume utilities. In use, the sprayer draws liquid from the container through the suction hose. Packet forwarding rules at the end-user modem and at the multicast router separate unidirectional multicast and bi-directional control flows.