Abstract: A lead frame 10 includes first and second frames 13, 14 and a fixed contact piece 15. The fixed contact piece 15 is integrally formed with the first frame via a conductive connection part 16. The first frame and the fixed contact piece 15 and the second frame have installation parts 13a, 14a, 14b, 15b to which resistance elements are able to install. The first frame 13 and the fixed contact piece have installation parts 13b, 15a to which resistance elements are able to install. Electrical circuits of different types are formed through combinations of whether the resistance elements are installed to the respective installation parts and whether the conductive connection part 16 is cut off.

Abstract: A switch device may include a pressing member, an urging member, fixed contacts, at least one movable contact swingable in a direction intersecting with a movement direction of the pressing member and connecting and disconnecting between the fixed contacts. The pressing member may include a slider portion extending in a direction oblique to the movement direction and slidable along the movable contact. The movable contact may be pressed by the slider portion in the pressing member sliding to swing and come in contact with and separate from at least one of the fixed contacts in response to the pressing member moving from a reference position to a pressed position.

Abstract: A nucleic acid detection kit including: (i) a first single-stranded circular DNA; (ii) a first oligonucleotide primer; (iii) a second single-stranded circular DNA; and (iv) a second oligonucleotide primer; wherein the first oligonucleotide primer is hound to a carrier through the 5?-end thereof, and the second oligonucleotide primer is bound, through the 5?-end thereof, to the carrier to which the first oligonucleotide primer is hound.