To provide a locked state display device for a door locking device for displaying to make a locked state positively recognizable in order to associate the on/off conditions of a security system with the opening/closing of the door locking device.
The locked state display device for the door locking device is provided with locked state detecting means 112a, 112b provided in a position facing a dead bolt 213 in a strike box 110 of the door locking device for a building provided with the security system, to detect the locked/unlocked state of the dead bolt, and an audio device connected to the locked state detecting means and giving a predetermined voice when detecting a change in the locked/unlocked state of the dead bolt, to make a voice display when locking or unlocking operation of the door locking device is performed.
ADO SYSTEM KK
URO ELECTRONICS CO LTD
Masami Tamama
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
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