An end effector includes a palm and a plurality of fingers capable of moving in a direction intersecting an extending direction of each of fingers as well as approaching each other and grasping and object being grasped. At least one of the plurality of fingers includes a proximity sensor unit provided at a tip portion in the extending direction, the proximity sensor unit being placed capable of detecting approach and separation of the proximity sensor unit with respect to an object in the extending direction and capable of detecting approach and separation of the object with respect to the proximity sensor unit in the extending direction. The proximity sensor unit includes a frame shaped detection region that covers an edge of the tip portion when viewed from the extending direction.
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