PROBLEM TO BE SOLVED: To provide a sensor controller having a lighting function for making an operation lock button visually recognizable in panel operation even if the area around an operation panel surface is dark.;SOLUTION: In the state where the operation lock button 5 is locked and all operation buttons 4 are extinguished, when at least one of the operation buttons is operated, all the operation buttons 4 or only the operation lock button 5 are/is illuminated, and the position of the operation lock button 5 to be unlocked is clarified, whereby the position of the operation lock button 5 can be visually recognized even if the area around the operation panel surface is dark, thereby it is easily unlocked and an erroneous operation can be prevented.;COPYRIGHT: (C)2006,JPO&NCIPI
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