| 340 / | HD | COMMUNICATIONS: ELECTRICAL |
| 500 | DF | CONDITION RESPONSIVE INDICATING SYSTEM {6} |
| 540 | DF | .~ Specific condition {18} |
| 568.1 | DF | .~.~ Article placement or removal (e.g., anti-theft) {9} |
| 572.1 | DF | .~.~.~ Detectable device on protected article (e.g., "tag") {7} |
| 572.8 | | .~.~.~.~ Specified device housing or attachment means {1} |
| 572.9 | DF | .~.~.~.~.~> Having means locking device to article |