A door latch device comprising: a first position switch and a second position switch, each of the first position switch and the second position switch including a first contact hole connected to one of a normally open contact or a normally closed contact, a second contact hole connected to a contact having a reverse format of the first contact hole, and a common contact hole connected to a common contact, wherein the first contact hole, the second contact hole and the common contact hole are arranged on a straight line, the first position switch and the second position switch are disposed at positions shifted from each other along the straight line and stacked in a piercing direction of the first contact hole, the second contact hole, and the common contact; characterized in that the door latch device further comprises: a common pin configured to be electrically conducted to the common contact hole of the first position switch and the first contact hole of the second position switch by being inserted therein; a first signal pin configured to be electrically conducted to the first contact hole of the first position switch by being inserted therein; and a second signal pin configured to be electrically conducted to the common contact of the second position switch by being inserted therein, and the first position switch and the second position switch are configured to perform a switch operation at a same timing of an operation of a predetermined operation detection target. a first position switch and a second position switch, each of the first position switch and the second position switch including a first contact hole connected to one of a normally open contact or a normally closed contact, a second contact hole connected to a contact having a reverse format of the first contact hole, and a common contact hole connected to a common contact, wherein the first contact hole, the second contact hole and the common contact hole are arranged on a straight line, the first position switch and the second position switch are disposed at positions shifted from each other along the straight line and stacked in a piercing direction of the first contact hole, the second contact hole, and the common contact; a first contact hole connected to one of a normally open contact or a normally closed contact, a second contact hole connected to a contact having a reverse format of the first contact hole, and a common contact hole connected to a common contact, wherein the first contact hole, the second contact hole and the common contact hole are arranged on a straight line, the first position switch and the second position switch are disposed at positions shifted from each other along the straight line and stacked in a piercing direction of the first contact hole, the second contact hole, and the common contact; characterized in that the door latch device further comprises: a common pin configured to be electrically conducted to the common contact hole of the first position switch and the first contact hole of the second position switch by being inserted therein; a first signal pin configured to be electrically conducted to the first contact hole of the first position switch by being inserted therein; and a second signal pin configured to be electrically conducted to the common contact of the second position switch by being inserted therein, and the first position switch and the second position switch are configured to perform a switch operation at a same timing of an operation of a predetermined operation detection target. a common pin configured to be electrically conducted to the common contact hole of the first position switch and the first contact hole of the second position switch by being inserted therein; a first signal pin configured to be electrically conducted to the first contact hole of the first position switch by being inserted therein; and a second signal pin configured to be electrically conducted to the common contact of the second position switch by being inserted therein, and the first position switch and the second position switch are configured to perform a switch operation at a same timing of an operation of a predetermined operation detection target.