A testing environment and a method for telephone number identification andor verification. The distal end of the outlet tube is in flow communication with the desired component. The header is indicative of a tunnel that is used to support traffic from the first network to a second network over the backbone. The retaining plate 9 is thus freed allowing the foot-retaining part 1 to separate from the suspension part 2. The warning unit generates the warning notifying the user that the vehicle is in a situation inappropriate for the user to leave the vehicle when the door opens under a situation in which the charged device has been determined from the detection of the first switch as being set at the charge location. A groove for an optical path, through which the received light passes to be guided to said light receiving element and a first protective groove formed around said groove for an optical path to block said adhesive resin from intruding into said groove for an optical path are formed on said semiconductor substrate.