A radiation imaging device includes plural individual detectors defining an irregular rectangular active area responsive to x-rays and with different widths along a length of the active area. The system includes forward-facing sensor for collecting light emanating from for instance a second vehicle, and a controller for controlling, when the headlamp switch is detected as being in the automatic headlamp position, the headlamp states as a function of the sensed intensity of the beam of light emanating from said second vehicle. The isolator system further provides control systems for each of the isolated circuit systems and provides robust control in a variety of start up conditions. The neon light unit includes a neon light tube which has a character sign portion and is supported by the supporting frame, and a power controller which is electrically connected to the neon light tube such that when it is powered up, it forms as a light source to highlight the displaying cover as well as generate a neon light effect at the second displaying side. The shaker assembly permitting a vibration to be induced within the tested component, such as for use in measuring operating characteristics of the tested component. The DUT is connected to test circuits corresponding to each of these electrode groups so that terminals of the DUT are connected to the corresponding test circuit when the DUT is placed at multiple specific positions on the above-mentioned electrode board.