The invention provides a novel approach to increase immunoglobulin expression in non-human transgenic animals. A basic idea of the invention is to equip a device such as a lamp with a network transmitter and receiver with a form of proximity detection in order to enable a user to easily copy the settings of one device to another device within their proximity. The sets of light intensity data are processed to determine a position along the measurement path at which a predetermined feature occurs in the light intensity data for each sensed region and to enhance image data representing the intensity data to facilitate the detection by a user of the interference fringes. A portion of the material surrounding the cavity is preferably permeable to a substance useful for measuring reaction, but not to the reagent or the sample. The cable connector can fulfill circuit state determination by disposing the switch terminal set.