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warning device | |||
danger indicator | |||
sensing circuit | |||
alarm system | |||
warning assembly | |||
warning horn circuit |
Warnanlage : 8 phrases in 6 subjects |
Automobiles | 1 |
Communications | 1 |
Earth sciences | 3 |
General | 1 |
Information technology | 1 |
Measuring instruments | 1 |