| http://www.w3.org/ns/prov#value | - Connected to the protection device 231 are a key removal detecting circuit 253 for detecting whether the key 201 has been removed from the key inserting hole of the ignition switch, an open-closed state detecting circuit 254 for detecting whether or not all the coverings such as doors are closed, and a locking detection circuit 255 for detectig whether or not all the coverings are locked.
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