In a first display mode, a threshold value is numerically displayed on a first display section and the current light reception amount is numerically displayed on a second display section. The automatic installation device comprises an elevating mechanism, a loading mechanism for procuring the object, and a flexing mechanism connected between the elevating mechanism and the loading mechanism. The display panel includes first pixel rows and second pixel rows arranged alternately in a vertical direction. The steering tendons may be located approximately angularly aligned, thus causing the deflection profiles to be unidirectional. The electrical power may go to a single DC-to-DC converter and voltage clamp for providing a voltage source to a microcontroller and other circuits of the system.