To make it possible to confirm whether locking operation of a lock unit is good or not and to enable the accurate detection of unlawful unlocking of the lock unit.

A micro-switch 13 is mounted to the rear side of a case 1, a switch operation pin 15 for pushing an actuator lever 14 of the micro-switch 13 is mounted to a case 2 in a movable manner, a pin-hole 25 interlocking with the front end of the switch operation pin 15 is provided to a lock plate 16 in the case a handle 2 goes in the case 1. Then, when the lock plate 16 is moved to a lock stop position with the rotation of a rotor 24, the switch operation pin 15 is moved by interlocking with the lock plate 16.